Revision history Table of revisions
Date Changed Rev
March 2016 Updated for Engineering Tomorrow design. 0710
August 2015 PVPX modules description updated 0709
June 2015 Oil consumption corrected HH
November 2014 Drawings adjusted in size HG
May 2014 Fluid consumption change page 30 HF
February 2014 Spec. sheet update HE
January 2014 Converted to Danfoss layout – DITA CMS HD
February 2006 - Aug 2013 Various changes BA - HC
January 2005 New Edition AA
Technical Information
PVG 32 Proportional Valve Group
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Danfoss | March 2016 520L0344 | BC00000038en-US0710
General description
Features of PVG 32...........................................................................................................................................................................5
PVG modules .....................................................................................................................................................................................5
PVP, pump side modules..........................................................................................................................................................5
PVB, basic modules.....................................................................................................................................................................5
Actuation modules.....................................................................................................................................................................6
Remote control units ......................................................................................................................................................................6
PVG 32 with open center PVP (fixed displ. pump) • PVB with flow control spool.....................................................7
PVG 32 with closed center PVP (variable displ. pump) • PVB with flow control spool............................................ 8
PVG 32 sectional view.....................................................................................................................................................................8
Load sensing for variable displ. pump supply....................................................................................................................... 9
Safety in application
Control system example..............................................................................................................................................................12
Examples of wiring block diagram.....................................................................................................................................14
Function
Load sensing controls...................................................................................................................................................................16
LS control with bleed orifice (do not use with PVG valves).......................................................................................16
Integral PC function.................................................................................................................................................................16
Load sensing system characteristics:.................................................................................................................................16
Remote pressure compensated controls.............................................................................................................................. 16
Remote pressure compensated system characteristics:............................................................................................ 17
Typical applications for remote pressure compensated systems:..........................................................................17
PVG 32 main spool with pressure compensated control................................................................................................ 17
Pressure compensated system characteristics.............................................................................................................. 18
Typical applications for pressure compensated systems...........................................................................................18
PVPC adapter for external pilot oil supply............................................................................................................................18
PVPC with check valve for open center PVP...................................................................................................................18
PVPC without check valve for open or closed center PVP.........................................................................................19
PVMR, friction detent....................................................................................................................................................................21
PVMF, mechanical float position lock.....................................................................................................................................21
PVBS, main spools for flow control (standard).................................................................................................................... 21
PVBS, main spools for flow control (linear characteristic)...............................................................................................21
PVBS, main spools for pressure control................................................................................................................................. 22
Background.................................................................................................................................................................................22
Principle....................................................................................................................................................................................... 22
Application..................................................................................................................................................................................23
Sizing.............................................................................................................................................................................................23
Limitation.................................................................................................................................................................................... 24
PVPX, electrical LS unloading valve.........................................................................................................................................24
PVG 32 technical data
PVH, hydraulic actuation.............................................................................................................................................................26
PVM, mechanical actuation........................................................................................................................................................26
PVE, electrical actuation.............................................................................................................................................................. 26
PVPX, electrical LS unloading valve.........................................................................................................................................29
Electrical actuation
Electrical control of PVG.............................................................................................................................................................. 30
Closed loop control.......................................................................................................................................................................31
PVEO................................................................................................................................................................................................... 32
PVEM...................................................................................................................................................................................................32
PVEA, PVEH, PVES, PVEU..............................................................................................................................................................33
PVEP....................................................................................................................................................................................................33
PVED-CC and PVED-CX.................................................................................................................................................................33
PVHC...................................................................................................................................................................................................34
Technical characteristics
General...............................................................................................................................................................................................36
PVP, pump side module.............................................................................................................................................................. 36
Technical Information
PVG 32 Proportional Valve Group
Contents
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PVB, basic modules oil flow characteristics..........................................................................................................................36
Pressure-compensated PVB, open center PVP ..............................................................................................................37
PVB without pressure compensation, open center PVP.............................................................................................38
PVB without pressure compensation, closed center PVP..........................................................................................39
PVLP, shock and PVLA, suction valves...............................................................................................................................41
Pressure build-up for pressure controlled spools.........................................................................................................41
Pressure control spool flow characteristics..........................................................................................................................41
Examples of how to use the characteristics for pressure control spools...................................................................42
Characteristics for float position main spools..................................................................................................................... 43
Hydraulic systems
Manually actuated PVG 32 – fixed displ. pump.................................................................................................................. 45
Electrically actuated PVG 32 – variable displ. pump......................................................................................................... 46
Other operating conditions
Oil.........................................................................................................................................................................................................47
Particle content, degree of contamination...........................................................................................................................47
Filtration............................................................................................................................................................................................47
Dimensions
PVM, control lever positions...................................................................................................................................................... 50
Surface treatment..........................................................................................................................................................................51
Modules symbols, description and code numbers
PVP, pump side modules.............................................................................................................................................................52
PVB, basic modules........................................................................................................................................................................54
PVLA, suction valve (fitted in PVB)...........................................................................................................................................56
PVLP, shock and suction valve (fitted in PVB)......................................................................................................................56
PVM, mechanical actuation........................................................................................................................................................57
PVH, hydraulic actuation.............................................................................................................................................................58
PVS, end plate..................................................................................................................................................................................58
PVAS, assembly kit.........................................................................................................................................................................58
PVPX, electrical LS unloaded valve..........................................................................................................................................59
PVPC, plug for external pilot oil supply..................................................................................................................................59
Module selection chart
Standard FC spools........................................................................................................................................................................60
Standard FC spools, hydraulic actuation...............................................................................................................................61
FC spools for mechanical float position, PVMF...................................................................................................................61
FC spools for friction detent, PVMR.........................................................................................................................................62
FC spools with linear flow characteristic .............................................................................................................................. 62
Standard PC spools .......................................................................................................................................................................63
Standard PC spools, hydraulic actuation...............................................................................................................................64
PVB, basic valves.............................................................................................................................................................................65
PVP, pump side module.............................................................................................................................................................. 66
PVE, electrical actuation.............................................................................................................................................................. 68
Order specification
Standard and option assembly.................................................................................................................................................70
Reordering........................................................................................................................................................................................70
Pressure setting limits.................................................................................................................................................................. 70
PVG 32 specification sheet......................................................................................................................................................... 72
Technical Information
PVG 32 Proportional Valve Group
Contents
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PVG 32 is a hydraulic load sensing valve designed to give maximum flexibility. From a simple load sensing
directional valve, to an advanced electrically controlled load-independent proportional valve.
The PVG 32 modular system makes it possible to build up a valve group to meet requirements precisely.
The compact external dimensions of the valve remain unchanged whatever combination is specified.
Features of PVG 32
•
Load-independent flow control:
‒
Oil flow to an individual function is independent of the load pressure of this function
‒
Oil flow to one function is independent of the load pressure of other functions
•
Good regulation characteristics
•
Energy-saving
•
Up to 12 basic modules per valve group
•
Several types of connection threads
•
Low weight
•
Compact design and installation
PVG modules
PVP, pump side modules
•
Built-in pressure relief valve
•
Pressure gauge connection
•
Versions:
‒
Open center version for systems with fixed displacement pumps
‒
Closed center version for systems with variable displacement pumps
‒
Pilot oil supply for electrical actuator built into the pump side module
‒
Pilot oil supply for hydraulic actuation built into the pump side module
‒
Versions prepared for electrical LS unloading valve PVPX
PVB, basic modules
•
Interchangeable spools
•
Depending on requirements the basic module can be supplied with:
‒
Integrated pressure compensator in channel P
‒
Load holding check valve in channel P
‒
Shock/suction valves for A and B ports
Technical Information
PVG 32 Proportional Valve Group
General description
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‒
LS pressure limiting valves individually adjustable for ports A and B
‒
Different interchangeable spool variants
‒
All versions suitable for mechanical, hydraulic and electrical actuation
Actuation modules
The basic module is always fitted with mechanical actuator PVM and PVMD, which can be combined with
the following as required:
•
Electrical actuator (11 - 32 V ===):
‒
PVES – proportional, Super
‒
PVEH – proportional, High performance
‒
PVEH-F – proportional high performance, Float
‒
PVEA – proportional low hysteresis
‒
PVEM – proportional, Medium performance
‒
PVEO – ON/OFF
‒
PVEU – proportional, voltage control, 0-10 V
‒
PVED-CC – Digital CAN controlled J1939/ISOBUS
‒
PVED-CX – Digital CAN controlled CANopen X-tra safety
‒
PVEP – PWM voltage controlled (11-32 V)
‒
PVHC – High Current actuator for PVG
•
PVMR, cover for Mechanical detent
•
PVMF, cover for Mechanical Float
•
PVH, cover for Hydraulic actuation
Remote control units
•
Electrical remote control units:
‒
PVRE, PVRET
‒
PVREL
‒
PVRES
‒
Prof 1
‒
Prof 1 CIP
‒
JS120
‒
JS1000 Ball grip
‒
JS1000 PRO grip
‒
JS2000
‒
JS6000
‒
JS7000
•
Hydraulic remote control unit: PVRHH
Technical Information
PVG 32 Proportional Valve Group
General description
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Electrical and hydraulic remote control units
PVRE, electrical control unit, 162F…
Prof 1, 162F…
PVREL, electrical control unit, 155U…
PVRES, electrical control unit, 155B…
PVRH, hydraulic control unit, 155N…
155N0003 155N0001 155N0004 155N0005 155N0002
PVG 32 with open center PVP (fixed displ. pump) • PVB with flow control spool
When the pump is started and the main spools in the individual basic modules (11) are in the neutral
position, oil flows from the pump, through connection P, across the pressure adjustment spool (6) to
tank. The oil flow led across the pressure adjustment spool determines the pump pressure (stand-by
pressure).
When one or more of the main spools are actuated, the highest load pressure is fed through the shuttle
valve circuit (10) to the spring chamber behind the pressure adjustment spool (6), and completely or
partially closes the connection to tank to maintain pump pressure.
Pump pressure is applied to the right-hand side of the pressure adjustment spool (6).
The pressure relief valve (1) will open should the load pressure exceed the set value, diverting pump flow
back to tank.
In a pressure-compensated basic module the compensator (14) maintains a constant pressure drop
across the main spool – both when the load changes and when a module with a higher load pressure is
actuated.
With a non pressure-compensated basic module incorporating a load drop check valve (18) in channel P,
the check valve prevents return oil flow.
The basic module can be supplied without the load drop check valve in channel P for functions with over-
center valves.
The shock valves PVLP (13) with fixed setting and the suction valves PVLA (17) on ports A and B are used
for the protection of the individual working function against overload and/or cavitation.
Technical Information
PVG 32 Proportional Valve Group
General description
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An adjustable LS pressure limiting valve (12) can be built into the A and B ports of pressure-compensated
basic modules to limit the pressure from the individual working functions. Please see the sectional
drawingPVG 32 sectional view on page 8 below for better understanding of this example.
The LS pressure limiting valves save energy compared with the shock valves PVLP:
•
with PVLP all the oil flow to the working function will be led across the combined shock and suction
valves to tank if the pressure exceeds the fixed setting.
•
with LS pressure limiting valves an oil flow of about 2 l/min [0.5 US gal/min] will be led across the LS
pressure limiting valve to tank if the pressure exceeds the valve setting.
PVG 32 with closed center PVP (variable displ. pump) • PVB with flow control spool
In the closed center version of PVP an orifice (5) and a plug (7) have been fitted instead of the plug (4).
This means that the pressure adjustment spool (6) will only open to tank when the pressure in channel P
exceeds the set value of the pressure relief valve (1).
In load sensing systems the load pressure is led to the pump control via the LS connection (8).
In the neutral position the pump load sense control sets the displacement so that leakage in the system is
compensated, to maintain the set stand-by pressure.
When a main spool is actuated the pump load sense control will adjust the displacement so that the set
differential pressure (margin) between P and LS is maintained.
The pressure relief valve (1) in PVP should be set at a pressure of approx. 30 bar [435 psi] above maximum
system pressure (set on the pump or external pressure relief valve).
PVG 32 sectional view
1 2
3
4+5
67
9
8
T P
M
A
LS
B A
12
13
11
10
14
16
17
15
T T
LS
B
LS
A
B A
P
T T
B
19
P
18 20
V310106.A
PVP
PVB
PVB
Technical Information
PVG 32 Proportional Valve Group
General description
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Legend:
1 – Pressure relief valve
2 – Pressure reduction valve for pilot oil supply
3 – Pressure gauge connection
4 – Plug, open center
5 – Orifice, closed center
6 – Pressure adjustment spool
7 – Plug, closed center
8 – LS connection
9 – LS signal
10 – Shuttle valve
11 – Main spool
12 – LS pressure limiting valve
13 – Shock and suction valve, PVLP
14 – Pressure compensator
15 – LS connection, port A
16 – LS connection, port B
17 – Suction valve, PVLA
18 – Load drop check valve
19 – Pilot oil supply for PVE
20 – Max. oil flow adjustment screws for A/B ports
Load sensing for variable displ. pump supply
The pump receives fluid directly from the reservoir through the inlet line. A screen in the inlet line
protects the pump from large contaminants.
The pump outlet feeds directional control valves such as PVG-32, hydraulic integrated circuits (HIC), and
other types of control valves.
The PVG valve directs and controls pump flow to cylinders, motors and other work functions. A heat
exchanger cools the fluid returning from the valve. A filter cleans the fluid before it returns to the
reservoir.
Flow in the circuit determines the speed of the actuators. The position of the PVG valve spool determines
the flow demand. A hydraulic pressure signal (LS signal) communicates demand to the pump control.
The pump control monitors the pressure differential between pump outlet and the LS signal, and
regulates servo pressure to control the swashplate angle. Swashplate angle determines pump flow.
Actuator load determines system pressure. The pump control monitors system pressure and will decrease
the swashplate angle to reduce flow if system pressure reaches the pump control setting.
A secondary system relief valve in the PVG valve acts as a back-up to control system pressure.
Technical Information
PVG 32 Proportional Valve Group
General description
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Pictorial circuit diagram
System pressure
Servo pressure
Actuator pressure
Load sense pressure
Actuator return
Suction / case drain /
system return
K/L Frame Series 45
open circuit axial
piston pump with
load sensing control
PVG 32
multi-section
load
sensing
control
valve
P101 658E
Reservoir
Filter
Heat exchanger
Double-acting cylinder
Bi-directional
gear motor
Technical Information
PVG 32 Proportional Valve Group
General description
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All makes and all types of control valves (incl. proportional valves) can fail, thus the necessary protection
against the serious consequences of function failure should always be built into the system. For each
application an assessment should be made for the consequences of pressure failure and uncontrolled or
blocked movements.
To determine the degree of protection that is required to be built into the application, system tools such
an FMEA (Failure Mode and Effect Analysis) and Hazard and Risk Analysis can be used.
FMEA – IEC EN 61508
FMEA (Failure Mode and Effect Analysis) is a tool used for analyzing potential risks. This analytical
technique is utilized to define, identify, and prioritize the elimination or reduction of known and/or
potential failures from a given system before it is released for production. Please refer to IEC FMEA
Standard 61508.
Hazard and risk analysis ISO 12100-1 / 14121
This analysis is a tool used in new applications as it will indicate whether there are special safety
considerations to be met according to the machine directives EN 13849. Dependent on the determined
levels conformity this analysis will detirmine if any extra requirements for the product design,
development process, production process or maintenance, i.e. the complete product life cycle.
W
Warning
All makes/brands and types of directional control valves – inclusive proportional valves – can fail and
cause serious damage. It is therefore important to analyze all aspects of the application.
Because the proportional valves are used in many different operation conditions and applications,
the manufacturer of the application is alone responsible for making the final selection of the products –
and assuring that all performance, safety and warning requirements of the application are met.
The process of choosing the control system – and safety levels – is governed by the machine directives
EN 13849 (Safety related requirements for control systems).
Technical Information
PVG 32 Proportional Valve Group
Safety in application
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Control system example
Example of a control system for manlift using PVE Fault monitoring input signals and signals from external
sensors to ensure the PLUS+1
®
main controllers correct function of the manlift.
Legend:
1 – Main power supply
2 – Emergency stop/man present switch
3 – HMI/Joystick control
4 – Movement detection sensors
5 – Main controller
6 – PVG control valve
7 – Hydraulic deactivation
Technical Information
PVG 32 Proportional Valve Group
Safety in application
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Electrical block diagram for the above illustration
W
Warning
It is the responsibility of the equipment manufacturer that the control system incorporated in the
machine is declared as being in conformity with the relevant machine directives.
PVG 32 – mainly used in system with fixed displacement pumps:
•
PVSK, commonly used in crane application - full flow dump
•
PVPX, LS dump to tank
PVG 100 – alternative LS dump or pilot supply disconnect:
•
PVPP, pilot oil supply shut off
•
External cartridge valve connecting LS pressure or main pressure to tank
PVG 120 – pump disconnect / block for variable pumps:
•
PVPE, full flow dump for the PVG 120
•
External cartridge valve connecting LS pressure to tank
Technical Information
PVG 32 Proportional Valve Group
Safety in application
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Examples of wiring block diagram
Example of a typical wiring block diagram using PVEH with neutral power off switch and fault monitoring
output for hydraulic deactivation.
Fault detection output
high=on
low=off
Alarm
logic
2)
Memory3)
E1
E2
Output
AND
OR
U
DC2
Error
U
S
Neutral detection / Supply control
signal
≠
neutral
OFF
Delay
1)
U
DC2
Error
U
S
PVEH
with AMP
connector
PVEH
with AMP
connector
Hydraulic
deactivation
Neutral detection / Supply control
signal
≠
neutral
OFF
Delay
1)
PVE 1
PVE 2
Emergency
stop
Man present
switch
C
C
D
B
B
A
P301 318
A– Emergency stop / man present switch
B– PVE Fault monitoring signals
C– Neutral signal detection.
D– Hydraulic deactivation
System Control Logic e.g. PLUS+1® for signal monitoring and triggering signal for deactivation of the
hydraulic system.
W
Warning
It is the responsibility of the equipment manufacturer that the control system incorporated in the
machine is declared as being in conformity with the relevant machine directives.
Technical Information
PVG 32 Proportional Valve Group
Safety in application
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Example of fault monitoring for deactivation of the hydraulic system with extra fault inputs using the PVE’s
with DI (Direction Indication) function.
Neutral detection / Supply control
signal
≠
neutral
OFF
Delay
1)
Fault detection output
PVEH-DI
AMP supply
connector
PVEH-DI
AMP supply
connector
PVEH-DI
AMP connector
PVEH-DI
AMP connector
AND
high=on
low=off
Neutral detection / Supply control
signal
≠
neutral
OFF
Delay
1)
PVE 1
PVE 2
Fault detection
Delay
DI
Logic
Memory
U
S
DI-A
DI-B
2)
4)
3)
Output
Fault detection
Delay
DI
Logic
Memory
U
S
DI-A
DI-B
2)
4)
3)
Output
OR
Emergency
Stop
Man present
switch
P301 319
U
DC2
Error
U
S
DI-B
Error
DI-A
U
DC2
Error
U
S
Error
DI-A
Hydraulic
deactivation
System Control Logic e.g. PLUS+1® for signal monitoring and triggering signal for deactivation of the
hydraulic system.
W
Warning
It is the responsibility of the equipment manufacturer that the control system incorporated in the
machine is declared as being in conformity with the relevant machine directives.
Technical Information
PVG 32 Proportional Valve Group
Safety in application
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Load sensing controls
The LS control matches system requirements for both pressure and flow in the circuit regardless of the
working pressure. Used with a closed center control valve, the pump remains in low-pressure standby
mode with zero flow until the valve is opened. The LS setting determines standby pressure.
Typical operating curve
0
0
P101 968E
PC setting
Flow
Pressure
Q max
Load sensing circuit
P101 967
Most load sensing systems use parallel, closed center, control valves with special porting that allows the
highest work function pressure (LS signal) to feed back to the LS control.
Margin pressure is the difference between system pressure and the LS signal pressure. The LS control
monitors margin pressure to read system demand. A drop in margin pressure means the system needs
more flow. A rise in margin pressure tells the LS control to decrease flow.
LS control with bleed orifice (do not use with PVG valves)
The load sense signal line requires a bleed orifice to prevent high-pressure lockup of the pump control.
Most load-sensing control valves include this orifice. An optional internal bleed orifice is available, for use
with control valves that do not internally bleed the LS signal to tank.
Integral PC function
The LS control also performs as a PC control, decreasing pump flow when system pressure reaches the PC
setting. The pressure compensating function has priority over the load sensing function.
For additional system protection, install a relief valve in the pump outlet line.
Load sensing system characteristics:
•
Variable pressure and flow
•
Low pressure standby mode when flow is not needed
•
System flow adjusted to meet system requirements
•
Lower torque requirements during engine start-up
•
Single pump can supply flow and regulate pressure for multiple circuits
•
Quick response to system flow and pressure requirements
Remote pressure compensated controls
The remote PC control is a two-stage control that allows multiple PC settings. Remote PC controls are
commonly used in applications requiring low and high pressure PC operation.
Technical Information
PVG 32 Proportional Valve Group
Function
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Typical operating curve
0
0
Q max
Pressure
Fl
ow
P101 969E
PC setting
Remote PC setting
Closed center circuit with remote PC
P101 966
The remote PC control uses a pilot line connected to an external hydraulic valve. The external valve
changes pressure in the pilot line, causing the PC control to operate at a lower pressure. When the pilot
line is vented to reservoir, the pump maintains pressure at the load sense setting.
When pilot flow is blocked, the pump maintains pressure at the PC setting. An on-off solenoid valve can
be used in the pilot line to create a low-pressure standby mode. A proportional solenoid valve, coupled
with a microprocessor control, can produce an infinite range of operating pressures between the low
pressure standby setting and the PC setting.
Size the external valve and plumbing for a pilot flow of 3.8 l/min [1 US gal/min]. For additional system
protection, install a relief valve in the pump outlet line.
Remote pressure compensated system characteristics:
•
Constant pressure and variable flow
•
High or low pressure standby mode when flow is not needed
•
System flow adjusts to meet system requirements
•
Single pump can provide flow to multiple work functions
•
Quick response to system flow and pressure requirements
Typical applications for remote pressure compensated systems:
•
Modulating fan drives
•
Anti-stall control with engine speed feedback
•
Front wheel assist
•
Road rollers
•
Combine harvesters
•
Wood chippers
PVG 32 main spool with pressure compensated control
The PC control maintains constant system pressure in the hydraulic circuit by varying the output flow of
the pump. Used with a closed center control valve, the pump remains in high pressure standby mode at
the PC setting with zero flow until the function is actuated.
Technical Information
PVG 32 Proportional Valve Group
Function
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Typical operating curve
0
0
Q max
Pressure
Fl
ow
P101 166E
PC setting
Simple closed center circuit
P101 965
Once the closed center valve is opened, the PC control senses the immediate drop in system pressure
and increases pump flow by increasing the swashplate angle.
The pump continues to increase flow until system pressure reaches the PC setting.
If system pressure exceeds the PC setting, the PC control reduces the swashplate angle to maintain
system pressure by reducing flow. The PC control continues to monitor system pressure and changes
swashplate angle to match the output flow with the work function pressure requirements.
If the demand for flow exceeds the capacity of the pump, the PC control directs the pump to maximum
displacement. In this condition, actual system pressure depends on the actuator load.
For additional system protection, install a relief valve in the pump outlet line.
Pressure compensated system characteristics
•
Constant pressure and variable flow
•
High pressure standby mode when flow is not needed
•
System flow adjusts to meet system requirements
•
Single pump can provide flow to multiple work functions
•
Quick response to system flow and pressure requirements
Typical applications for pressure compensated systems
•
Constant force cylinders (bailers, compactors, refuse trucks)
•
On/off fan drives
•
Drill rigs
•
Sweepers
•
Trenchers
PVPC adapter for external pilot oil supply
PVPC with check valve for open center PVP
PVPC with check valve is used in systems where it is necessary to operate the PVG 32 valve by means of
the electrical remote control without pump flow. When the external solenoid valve is opened, oil from
the pressure side of the cylinder is fed via the PVPC through the pressure reducing valve to act as the
pilot supply for the electrical actuators. This means that a load can be lowered by means of the remote
control lever without starting the pump.
The built-in check valve prevents the oil from flowing via the pressure adjustment spool to tank. With the
pump functioning normally the external solenoid valve is closed to ensure that the load is not lowered
Technical Information
PVG 32 Proportional Valve Group
Function
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due to the pilot supply oil flow requirement of approximately 1 l/min [0.25 US gal/min]. With closed
center PVP the external pilot oil supply can be connected to the pressure gauge connection without the
use of a PVPC plug.
PVPC with check valve for OC PVP
157-114.11
T P
LS
Hydraulic diagram
PVPC without check valve for open or closed center PVP
PVPC without check valve is used in systems where it is necessary to supply the PVG 32 valve with oil
from a manually operated emergency pump without directing oil flow to the pilot oil supply (oil
consumption about 0.5 l/min) [0.13 US gal/min].
When the main pump is working normally, the oil is directed through the PVPC plug via the pressure
reduction valve to the electrical actuators.
Technical Information
PVG 32 Proportional Valve Group
Function
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PVPC without check valve OC/CC PVP
157-193.11
T P
LS
Hydraulic diagram
When the main pump flow fails, the external shuttle valve ensures that the oil flow from the manually
operated emergency pump is used to pilot open the over center valve and lower the load. The load can
only be lowered using the mechanical operating lever of the PVG 32 valve.
Technical Information
PVG 32 Proportional Valve Group
Function
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PVMR, friction detent
The friction detent PVMR allows the directional spool to
be held in any position, resulting in infinitely variable,
reversible, pressure compensated flow.
This can be sustained indefinitely without having to
continue to hold the mechanical lever.
Friction detent spool position may be affected by high
differential actuator flow forces and system vibration
resulting in work function flow reduction.
PVMR, friction detent
PVMF, mechanical float position lock
Allows the float spool to be held in the float position after release of the mechanical handle.
PVMF, standard mount only
P → A → F (Push-in)
PVMF, optional mount only
P → A → F (Pull-out)
PVBS, main spools for flow control (standard)
When using standard flow control spools, the pump pressure is determined by the highest load pressure.
This is done either via the pressure adjustment spool in open center PVP (fixed displacement pumps) or
via the pump control (variable displacement pumps).
In this way the pump pressure will always correspond to the load pressure plus the stand-by pressure of
the pressure adjustment spool or the pump control. This will normally give optimum and stable
adjustment of the oil flow.
PVBS, main spools for flow control (linear characteristic)
PVBS main spools with linear characteristic have less dead band than standard spools and a proportional
ratio between control signal and oil flow in the range beyond the dead band. PVBS with linear
characteristic must never be used together with PVEM electrical actuators.
The interaction between the small dead band of the spools and the hysteresis of the PVEM actuator of
20% involves a risk of building up a LS pressure in neutral position.
Technical Information
PVG 32 Proportional Valve Group
Function
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Danfoss | March 2016 520L0344 | BC00000038en-US0710 | 21
In a few systems load sensing pump pressure may result in unstable adjustment of the oil flow and a
tendency towards system hunting.
This may be the case with working functions that have a large moment of inertia or over-center valves. In
such systems main spools for pressure control can be advantageous.
PVBS, main spools for pressure control
The spools are designed in such a way that the pump pressure is controlled by the spool travel. The main
spool must be displaced until the pump pressure just exceeds the load pressure before the working
function is applied. If the main spool is held in this position, the pump pressure will remain constant –
even if the load pressure changes – giving a stable system.
The use of pressure control spools, however, also means that:
•
the oil flow is load dependent
•
the dead band is load dependent
•
the pump pressure can exceed the load pressure by more than is usual
•
the pressure drop across main spool varies (energy consumption)
Due to these factors it is recommended that pressure control spools are only used when it is known for
certain that problems with stability will arise or already have arisen, and in applications where constant
pressure is needed e.g. drill holding.
Background
Instability in load sense control systems in certain applications with oscillations in the range of 1/2 - 2 Hz
can cause severe instability problems while trying to control functions in an application.
Critical applications are usually related to functions with an important inertia torque and/or functions
with secondarily fitted pressure controlled components e.g. over-center valves.
Examples:
•
a slewing function
•
main lifting/lowering function of a crane
The problem usually manifests itself in prolonged oscillation phenomena (Fig. 1), in a relatively constant
sequence of oscillations (Fig. 2) or in the worst case in an amplified sequence of oscillations (Fig. 3).
Fig. 1 Prolonged sequence Fig. 2 Constant sequence Fig. 3 Amplified sequence
P
P
P
Constant sequence
timetime time
Prolonged sequence Amplified sequence
P005 627E
To control the oscillation phenomena the "pressure control spool" was developed and is a patented
system which can minimize most of the oscillation issues.
Principle
The idea was to create a system operating independently of a constantly changing load pressure.
Therefore, we changed the well-known LS principle (Fig. 4), so that compensated pump pressure is part
of the LS system (Fig. 5) after the pressure compensator and before the metering range of the main spool.
Upon actuation of the spool, it will be led via a fixed and a variable orifice.
Technical Information
PVG 32 Proportional Valve Group
Function
22 |
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Danfoss | March 2016 520L0344 | BC00000038en-US0710
Fig. 4 Flow controlled spool
B
A
P005 625
Fig. 5 Pressure controlled spool
B
A
P005 626
The opening area of the variable orifice is at maximum at
initial actuation and 0 at full stroke of the spool and then
the pressure created between the two orifices is led into
the LS system in the usual way.
In this way the pump pressure is built up depending on
the spool travel, e.g. the spool will then have to be
stroked to a position that the pump pressure is higher
than the actual load pressure to make the oil flow from
P➝A/B.
When the load changes for a fixed spool position the flow
to for the function will also change.
The valve section is now a load-dependent valve, but
ensuring a constant pump pressure which is important in
obtaining a stable function.
Pump pressure vs. spool travel curve
Application
Pressure controlled spools should in principle only be used when you have stability issues. Typical
applications on a crane:
•
Lifting/lowering movement
•
Slewing movement with cylinders
•
For the main lifting/lowering function on a crane it is recommended to fit a "half" pressure control
spool. This means that the spool is designed with a normal flow control on the lifting port and
pressure control connected to the port where the pilot signal to the over-center valve is acting. You
will thus maintain a load-independent lifting movement and achieve a stable but load-depending
lowering movement.
•
As the load pressure on slewing movements is usually steady - irrespective of the crane being loaded
or not – it will be advantageous to use a "full" pressure control spool for A and B port.
In both cases we recommend the use of a basic valve, PVB, with pressure compensator. The pressure
compensator will ensure the individual load-independency between the basic valves.
It is further recommended to use the LS pressure relief valves as not only will they ensure individual
pressure limitation but also make it possible to adjust the maximum oil flow to the function.
It is not recommended to use shock valves as pressure limiting valves in connection with pressure control
spools.
Sizing
The size of "half" (e.g: P - A = flow control P - B pressure control) pressure control spools is determined on
basis of max. flow demand on the lifting port. If e.g. a max. pressure compensated flow of 65 l/min for the
lifting movement, you choose a 65 L/min spool (size D). The metering characteristic has then a given size.
As it is often requested to limit the use of the crane boom for downward push/force mode and the LS
Technical Information
PVG 32 Proportional Valve Group
Function
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Danfoss | March 2016 520L0344 | BC00000038en-US0710 | 23
pressure limitation can be used. It will appear from the characteristics enclosed what effect a pressure
limitation, P
LS
will have on max. flow on the lowering port.
The size for a "full" pressure control spool is determined on basis of known load pressure, P
LS
max, and
requested max. flow.
It will appear from the characteristics enclosed that if the load PLS is low and the pump pressure, P
p
, is
high as a result of max. stroked spool you will get a large flow.
If P
LS
is approaching PLS max. the flow will be reduced and the dead band increased. Max. oil flow can be
reduced by approx. 50% without limiting max. pressure.
The reduction is made by limiting the spool travel from 7 mm to 5.5 mm.
Limitation
If a pressure controlled spool is chosen for stability reasons consideration should be made to features
related to the pressure control principle.
Deadband will change according to the load conditions and the valve section will become load-
dependent and that the pump pressure may exceed the load pressure.
With all of the above in mind, a “pressure controlled spool” will minimize oscillation and obtain a stable
function that can be controlled smooth and precise.
PVPX, electrical LS unloading valve
PVPX is a solenoid LS unloading valve. PVPX is fitted into the pump side module enabling a connection to
be made between the LS and the tank lines. Thus the LS signal can be relieved to tank by means of an
electric signal.
For a PVP pump side module in open center version the relief to tank of the LS signal means that the
pressure in the system is reduced to the sum of the tank port pressure plus the neutral flow pressure for
the pump side module.
For a PVP pump side module in closed center version the relief to tank of the LS signal means that the
pressure is reduced to the sum of the tank port pressure for the pump side module plus the stand-by
pressure of the pump.
PVPX, electrical LS unloading valve
T
P
LS
157-195.11
M
Technical Information
PVG 32 Proportional Valve Group
Function
24 |
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Danfoss | March 2016 520L0344 | BC00000038en-US0710
The characteristics in this catalog are typical measured values. During measuring a mineral based
hydraulic oil with a viscosity of 21 mm²/s [102 SUS] at a temperature of 50 °C [122 °F] was used.
PVG 32 technical data
Maximum pressure Port P, A/B continuous
*
350 bar [5075 psi]
Port P intermittent
**
400 bar [5800 psi]
Port A/B intermittent
**
420 bar [6090 psi]
Port T, static/dynamic 25/40 bar [365/580 psi]
Oil flow rated Port P
‡§
140/230 l/min [37/61 US gal/min]
Port A/B, with press. comp.
†
100 l/min [26.4 US gal/min]
Port A/B witout press. comp. 125 l/min [33 US gal/min]
Spool travel, standard ± 7 mm [± 0.28 in]
Spool travel, float position Proportional range ± 4.8 mm [± 0.19 in]
Float position ± 8 mm [± 0.32 in]
Dead band, flow control spools
Standard ± 1.5 mm [± 0.06 in]
Linear characteristic ± 0.8 mm [± 0.03 in]
Maximum. internal leakage at 100 bar [1450 psi]
and 21 mm
2
/s [102 SUS]
A/B → T without shock valve 20 cm
3
/min [1.85 in
3
/min]
A/B → T with shock valve 25 cm
3
/min [2.15 in
3
/min]
Oil temperature (inlet temperature)
Recommended temperature 30 → 60 °C [86 → 140°F]
Minimum temperature -30 °C [-22 °F]
Maximum temperature +90 °C [194 °F]
Ambient temperature -30 → 60 °C [-22 → 140 °F]
Oil viscosity Operating range 12 - 75 mm
2
/s [65 - 347 SUS]
Minimum viscosity 4 mm
2
/s [39 SUS]
Maximum viscosity 460 mm
2
/s [2128 SUS]
Filtration / maximum contamination according to ISO 4406 23/19/16
Oil consumption in pilot oil pressure reduction valve 0.5 l/min [0.13 US gal/min]
*
With PVSI end plate. With PVS end plate max. 300 bar [4351 psi].
**
Intermittent pressure at max. 250,000 cycles of full PVG life time cycles, with PVSI end plate. The maximum intermittent pressure at max. 250,000
cycles stresses the need to confirm application duty cycle before proceeding with specification. For further information contact Danfoss Product
Application Engineering.
**
Intermittent pressure at max. 250,000 cycles of full PVG life time cycles, with PVSI end plate. The maximum intermittent pressure at max. 250,000
cycles stresses the need to confirm application duty cycle before proceeding with specification. For further information contact Danfoss Product
Application Engineering.
‡
In open circuit systems with short P-hoses/tubes, attention should be paid to pressure peaks at flows >100 l/min [26.4 US gal/min].
§
For a system with mid inlet PVPVM.
†
For 130 l/min contact Danfoss Product Application Engineering.
Rated pressure
Product P-port max. continuous pressure
PVG 32; PVG 120/32; PVG 100/32 with PVS 300 bar [4351 psi]
PVG 32; PVG 120/32; PVG 100/32 with PVSI 350 bar [5076 psi]
PVG 32 with PVBZ 250 bar [3626 psi]
PVG 32 with HIC steel 350 bar [5076 psi]
PVG 32 with HIC aluminium 210 bar [3046 psi]
Technical Information
PVG 32 Proportional Valve Group
PVG 32 technical data
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Danfoss | March 2016 520L0344 | BC00000038en-US0710 | 25
PVH, hydraulic actuation
Technical data for PVH
Control range pressure
5 – 15 bar [75 – 220 psi]
Max. pilot pressure
30 bar [435 psi]
Max. pressure on port T (the hydraulic remote control lever should be
connected directly to tank.)
10 bar [145 psi]
PVM, mechanical actuation
Operating torque for PVM
Spool displacement Operating torque N•m [lbf•in]
PVM + PVMD PVM + PVE PVM + PVH PVM + PVMR PVM+PVMF
from neutral position 2.2 ±0.2
[19.5 ±1.8]
2.2 ±0.2
[19.5 ±1.8]
2.5 ±0.2
[22.1 ±1.8]
17
[3.8]
22
[5.0]
max. spool travel 2.8 ±0.2
[24.8 ±1.8]
2.8 ±0.2
[24.8 ±1.8]
6.9 ±0.2
[61.0 ±1.8]
– –
into float position – – – – 60 [13.5]
away from float position – – – – 28 [6.3]
from any other position – – – 8.5 [73.3] –
No control lever position
2 x 6
Control lever range
±19.5°
Proportional control lever range
±13.4°
Control lever range – float position
22.3°
For further information about PVE please see the Technical Information PVE, Series 4 for PVG 32/100/120 ,
520L0553.
PVE, electrical actuation
Technical data for PVEO and PVEM
Supply voltage U
DC
rated
12 V
DC
24 V
DC
range
11 V to 15 V 22 V to 30 V
max. ripple
5%
Current consumption at rated voltage
0.65 A @ 12 V 0.33 A @ 24 V
Signal voltage (PVEM) neutral
0.5 x U
DC
A-port ↔ B-port
0.25 • U
DC
to 0.75 • U
DC
Signal current at rated voltage (PVEM)
0.25 mA 0.50 mA
Input impedance in relation to 0.5 • U
DC
12 KΩ
Power consumption
8 W
Technical Information
PVG 32 Proportional Valve Group
PVG 32 technical data
26 |
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Technical data for PVEA, PVEH and PVES
Supply voltage U
DC
rated
11 V to 32 V
range
11 V to 32 V
max. ripple
5%
Current consumption at rated voltage
PVEH/PVES (PVEA) 0.57 (33) A @ 12 V 0.3 (17) A @ 24 V
Signal voltage neutral
0.5 x U
DC
A-port ↔ B-port
0.25 • U
DC
to 0.75 • U
DC
Signal current at rated voltage
0.25 mA to 0.70 mA
Input impedance in relation to 0.5 • U
DC
12 KΩ
Input capacitor
100 ηF
Power consumption
PVEH/PVES (PVEA) 7 (3.5) W
(PVEH/PVES)
Max. load 100 mA 60 mA
Active
Reaction time at fault 500 ms (PVEA: 750 ms)
Passive
Reaction time at fault 250 ms (PVEA: 750 ms)
Reaction time for PVEO and PVEM
Supply voltage Function PVEO,
On/Off
PVEO-R,
On/Off
PVEM, Prop.
med.
Disconnected by means of
neutral switch
Reaction time from neutral
position to max. spool travel
max. 0.235 s 0.410 s 0.700 s
rated 0.180 s 0.350 s 0.450 s
min. 0.120 s 0.250 s 0.230 s
Disconnected by means of
neutral switch
Reaction time from max.
spool travel to neutral
position
max. 0.175 s 0.330 s 0.175 s
rated 0.090 s 0.270 s 0.090 s
min. 0.065 s 0.250 s 0.065 s
Constant voltage Reaction time from neutral
position to max. spool
position
max. - - 0.700 s
rated - - 0.450 s
min. - - 0.230 s
Constant voltage Reaction time from max.
spool travel to neutral
position
max. - - 0.700 s
rated - - 0.450 s
min. - - 0.230 s
Hysteresis
*
rated - - 20%
*
Hysteresis (control signal/spool travel) is indicated at rated voltage and f = 0.02 Hz for one cycle.
(one cycle = neutral → full A → full B → neutral)
Reaction time for PVEA, PVEH and PVES
Supply voltage Function PVEA
Prop. fine
s
PVEH
Prop. high
s
PVES
Prop. super
s
Disconnected by means
of neutral switch
Reaction time from neutral
position to max. spool travel
max. 0.50 0.23 0.23
rated 0.32 0.15 0.15
min. 0.25 0.12 0.12
Technical Information
PVG 32 Proportional Valve Group
PVG 32 technical data
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Danfoss | March 2016 520L0344 | BC00000038en-US0710 | 27
Reaction time for PVEA, PVEH and PVES (continued)
Supply voltage Function PVEA
Prop. fine
s
PVEH
Prop. high
s
PVES
Prop. super
s
Disconnected by means
of neutral switch
Reaction time from max. spool
travel to neutral position
max. 0.55 0.175 0.175
rated 0.40 0.09 0.09
min. 0.30 0.065 0.065
Constant voltage Reaction time from neutral
position to max. spool travel
max. 0.50 0.20 0.20
rated 0.32 0.12 0.12
min. 0.25 0.05 0.05
Constant voltage Reaction time from max. spool
travel to neutral position
max. 0.25 0.10 0.10
rated 0.20 0.09 0.09
min. 0.15 0.065 0.065
Hysteresis * rated 2% 4% ∼ 0%
The following technical data are from typical test results. For the hydraulic system a mineral based
hydraulic oil with a viscosity of 21 mm²/s [102 SUS] and a temperature of 50 °C [122 °F] were used.
Typical hysteresis characteristics for control signal vs spool travel of different PVE types*
2%20%
PVEM PVEA
+8
+6
+4
+2
0
-2
-4
-6
-8
4%
PVEH
157-504.10
PVES
~0%
* Hysteresis (control signal/spool travel) is indicated at rated voltage and f = 0.02 Hz. (one cycle = neutral
→ full A → full B → neutral)
The following technical data are from typical test results. For the hydraulic system a minetal based
hydraulic oil with a viscosity of 21 mm
2
/s [102 SUS] and a temperature of 50 °C [122 °F] were used.
Pilot oil consumption for PVEA, PVEH, PVES, PVEO and PVEM
Function PVEA
Prop. fine
PVEH
Prop. high
PVES
Prop. super
PVEO
ON/OFF
PVEM
Prop. medium
Neutral without
supply voltage
0 0 0.3 l/min
[0.079 US gal/min]
0 0
Locked with supply
voltage
0.4 l/min
[0.106 US gal/min]
0.1 l/min
[0.026 US gal/min]
0.3 l/min
[0.026 US gal/min]
0.1 l/min
[0.026 US gal/min]
0.1 l/min
[0.026 US gal/min]
Continuous actuations
with supply voltage
1.0 l/min
[0.26 US gal/min]
0.7 l/min
[0.185 US gal/min]
0.8 l/min
[0.211 US gal/min]
0.7 l/min
[0.185 US gal/min]
0.5 l/min
[0.132 US gal/min]
One actuation
(neutral → max)
with supply voltage
2 cm³ [0.12 in³]
Technical Information
PVG 32 Proportional Valve Group
PVG 32 technical data
28 |
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Fluids parameters
Oil viscosity
*
recommended range 12 - 75 mm²/s [65 - 347 SUS]
minimum 4 mm²/s [39 SUS]
maximum 460 mm²/s [2128 SUS]
Oil temperature recommended range 30 - 60˚C [86 -140˚F]
minimum -30˚C [-22˚F]
maximum 90˚C [194˚F]
Ambient temperature recommended range -30° → 60°C [-22° → 140°F]
Filtering in the hydraulic system Max. allowed degree of contamination: 23/19/16
(ISO 4406, 1999 version)
*
Max. start up viscosity 2500 mm²/s.
PVPX, electrical LS unloading valve
PVPX technical data
Max. operating pressure
350 bar [5075 psi]
Enclosure to IEC 529
IP65
Max. pressure drop at an oil flow of 0.1 l/min [2.6 US gal/min]
2 bar [30 psi]
Oil temperature
(Inlet)
Recommended temperature
30 °C to 60 °C [86 °F to 140 °F]
Min. temperature
-30 °C [-22 °F]
Max. temperature
90 °C [194 °F]
Max. coil surface temperature
155 °C [311 °F]
Ambient temperature
-30 °C to 60 °C [-22 °F to 140 °F]
Oil viscosity Operating range
12 to 75 mm
2
/s [65 to 347 SUS]
Min. viscosity
4 mm
2
/s [39 SUS]
Max. viscosity
460 mm
2
/s [2128 SUS]
Response time for LS pressure relief
300 ms
Rated voltage
12 V 24 V
Max. premissible deviation from rated supply voltage
± 10%
Current consumption at rated
voltage
at 22 °C [72 °F] coil temperature
1.55 A 0.78 A
at 110 °C [230 °F] coil temperature
1 A 0.5 A
Power consumption at 22 °C [72 °F] coil temperature
19 W
at 110 °C [230 °F] coil temperature
12 W
Technical Information
PVG 32 Proportional Valve Group
PVG 32 technical data
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Electrical control of PVG
Valve actuation with electrical actuators has been supported by Danfoss for a long time. The actuation
can be controlled directly by joystick, by a PLUS+1® controller or by a broad range of third part
controllers. The actuator controls the spool by building up pilot oil pressure on the end of the spool. For
the PVE a pilot oil pressure between 10 and 15 bar is used. For the PVHC a pilot oil pressure between 20
and 25 bar is used.
PVG with PVE
Valve section with naming - standard mounted - seen from PVP
V310072.B
PVE
Electronics
NC Solenoid valves
Pilot oil supply
B port
Oil
A port
PVB
PVM
Neutral spring
PVBS
NO solenoid valves
LVDT
P -> A
A detailed description of the variants is presented in:
PVE-Series 4 for PVG 32, PVG 100 and PVG 120 Technical Information, 520L0553, covers all analogue PVE –
PVEO, PVEH, PVES, PVEA, PVEM, PVEU, PVEP and the current controlled PVHC.
Electrohydraulic Actuator – PVED-CC Series 4 Technical Information, 520L0665, covers the ISOBUS/SAE
J1939 CAN controlled PVED-CC.
Electrohydraulic Actuator – PVED-CX Series 4 Technical Information, 11070179, covers the IEC61508 SIL2
certified CANopen controlled PVED-CX.
Technical Information
PVG 32 Proportional Valve Group
Electrical actuation
30 |
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PVE characteristic - control by voltage
PVEP
control range
PVEU
fixed
7.5V
5V2.5V
Closed loop control
The PVE variants PVEA/H/M/S/U/P and the PVED-CC/-CX has a closed loop control supported by a spool
position sensor that ensures integrity towards flow forces and oil viscosity.
Hysteresus for PVE variants*
2%20%
PVEM PVEA
+8
+6
+4
+2
0
-2
-4
-6
-8
4%
PVEH
157-504.10
PVES
~0%
* Hysteresis (control signal/spool travel) is indicated at rated voltage and f = 0.02 Hz. (one cycle = neutral
→ full A → full B → neutral)
The standard PVE’s are proportional activated actuator except PVEO which is on/off. The PVE’s have fault-
monitoring.
•
PVEU is available with PVEH and PVES hysteresis
•
PVEP, PVED-CC and PVED-CX are available with PVES hysteresis
The values are typical test data for exact ranges, see PVE Technical Information, 520L0553.
Technical Information
PVG 32 Proportional Valve Group
Electrical actuation
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Fault monitoring overview
Type Fault
monitoring
Delay before error
out
Error mode Error output
status
Fault output
on PVE
LED light Memory
†
PVEO
PVEM
No fault monitoring
PVEA
PVEH
PVEP
PVES
PVEU
Active 500 ms
(PVEA: 750 ms)
No fault Low < 2 V Green –
Input signal faults High ~U
DC
Flashing red Yes
Transducer (LVDT) Constant red
Close loop fault
Passive 250 ms
(PVEA: 750 ms)
No fault Low < 2 V Green –
Input signal faults High ~U
DC
Flashing red No
Transducer (LVDT) Constant red
Close loop fault
PVE
Float
six pin
Active 500 ms Float not active High ~U
DC
Constant red Yes
750 ms Float still active
Measured between fault output pin and ground.
†
Reset needed
PVEO
The PVEO is an on/off activated actuator. The PVEO has not fault-monitoring.
Variants:
•
PVEO-R with a ramp delayed actuation
•
PVEO-DI with direction indication feedback
•
Anodized aluminum block
•
ATEX certified
Power supply:
•
12 V
•
24 V
Connectors:
•
AMP
•
DIN/Hirshmann
•
Deutsch
®
AMP version DIN/Hirschmann version Deutsch
®
version
PVEO/PVEO-R
157-502.11
DC
DC
U
U
3
1
2
PVEM
The PVEM is a proportional activated actuator. The PVEM has not fault-monitoring.
Variants:
•
PVEM -R with a ramp delayed actuation
•
PVEM for float in B-direction and max. flow B at 4.8 mm
Power supply: 12 / 24 V
Connectors:DIN/Hirshmann
Technical Information
PVG 32 Proportional Valve Group
Electrical actuation
32 |
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PVEA, PVEH, PVES, PVEU
Variants:
•
-F for float in B-direction
max. flow B at 4.8 mm
•
-F for float in A-direction
max. flow A at 5.5 mm
•
PVES-SP with spool position feedback
•
Anodized aluminum block
•
ATEX certified
Power supply: 11→ 32 V
Connectors:
•
AMP
•
DIN/Hirshmann
•
Deutsch
®
AMP version DIN/Hirschmann version Deutsch
®
version
157-500.10
Grey connector
PVEA/PVEH/PVES
1
2
4
3
Pin no.
LED
Error
U
U
DC
S
LED
PVEA, PVEH, PVES, PVEU
and PVEH float A
PVEH, PVEM, PVES,
PVEH float B and PVEM float B
PVEA, PVEH, PVES, PVEU
and PVEH float B
PVEP
The PVEP is controlled with separate PWM control signals
for A and B direction.
The PVEP has hysteresis and fault monitoring like the
PVES.
Power supply: 11→ 32 V
Connector: Deutsch
®
Deutsch
®
version
Not
connected
Error
U
s
3
2
1
4
5
6
Spool position
PVES-SP
U
DC
LED
PVED-CC and PVED-CX
The CAN controlled PVE embedded microcontrollers support the same high spool controllability as the
PVES and additional has high quality feedbacks, safety monitoring and detailed diagnostics.
PVED has digital communication, that allows a wide range of feedback, setpoint and highly costumized
settings. CAN bus serial communication makes wiring much easier. Only one cable per PVG group.
Technical Information
PVG 32 Proportional Valve Group
Electrical actuation
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Power supply: 11 → 32 V
Connectors:
•
Deutsch
®
(PVED-CC)
•
AMP (PVED-CC and
PVED-CX)
PVE with Deutsch
®
connector incl. female connector
For more information on PVED please see the PVED-CC, Series 4 Technical Information, 520L0665.
PVHC
For PVG controlled by PVHC, hysteresis is influenced by lever (PVM). The PVHC control is done by dual
Pulse Width Modulated (PVM) high current supply 100-400 Hz PWM control signals.
The PVHC does not have neither fault monitoring nor internal closed loop control of the spool.
Power supply:
•
12 V
•
24 V
Connectors:
•
Deutsch
®
•
AMP
PVHC with AMP version
74.0
[2.913]
92.25
[3.631]
5.75
[0.226]
16.5
[0.650]
33.0 [1.299]
44.4 [1.748]
5.7
[0.224]
5.7
[0.224]
26.75
[1.053]
P301 123
PVHC with Deutsch
®
version
74.0
[2.913]
92.25
[3.631]
26.75
[1.053]
33.0 [1.299]
44.4 [1.748]
5.7
[0.224]
5.7
[0.224]
5.75
[0.226]
16.5
[0.650]
P301 124
Technical Information
PVG 32 Proportional Valve Group
Electrical actuation
34 |
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PVHC characteristic - Spool stroke vs current
0
400
200
600
1
2
1200
800
1000
1400
Current in mA
3
4
5
6
Spool stroke, mm
7
1600
400
200
600
1200
800
1000
1400
1600
200
100
300
600
400
500
700
800
200
100
300
600
400
500
700
800
@ 12V
@ 24V
V310 000.A
Ideal curve
Hysteresis
280/560 mA 500/1000 mA280/560 mA500/1000 mA
PVHC current response and hysteresis @ 25 bar Pp, 21 ctS, 25 °C. The ideal curve is determined by the
main spool neutral spring. The PVHC has high hysteresis. The hysteresis is affected by viscosity, friction,
flow forces, dither frequency and modulation frequency. The spool position will shift when conditions are
changed e.g. temperature change.
Technical Information
PVG 32 Proportional Valve Group
Electrical actuation
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General
The characteristics in this catalog are typical measured values. During measuring a mineral based
hydraulic oil with a viscosity of 21 mm2/s [102 SUS] at a temperature of 50°C [122°F] was used.
PVP, pump side module
Pressure relief valve characteristic in PVP
The pressure relief valve is set at an oil flow of 15 l/min [4.0 US gal/min].
Setting range:
•
30 to 350 bar [435 to 5075 psi] with PVSI end plate
•
30 to 300 bar [435 to 4351 psi] with PVS end plate
Pressure relief valve characteristic Neutral by-pass pressure drop characteristic (open
center)
PVB, basic modules oil flow characteristics
The oil flow for the individual spool depends on:
•
type of basic module (with/without compensation)
•
type of pump (fixed or variable displacement).
Technical Information
PVG 32 Proportional Valve Group
Technical characteristics
36 |
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Linear oil flow depending on spool type
U
S
= Signal voltage; U
DC
= Supply voltage; 1 = First PVB after PVP; 8 = Eighth PVB after
Pressure-compensated PVB, open center PVP
The oil flow is dependent on the supplied pump oil flow.
The characteristics are plotted for a pump oil flow, Q
P
, corresponding to the rated maximum spool oil
flow, QN. Increasing the pump oil flow to 1,4 × Q
N
will give the same oil flow on the eighth as on the first
basic module.
The letters AA, A, B, etc. denote spool types. The characteristic below is shown for spool travel in both
directions. All other characteristics are shown for spool travel in one direction only.
Technical Information
PVG 32 Proportional Valve Group
Technical characteristics
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Progressive oil flow characteristic depending on spool type
157-61.im
PWM for PVEP/T
control range
PVE
PVM
PVM
U
S
= Signal voltage; U
DC
= Supply voltage; 1 = First PVB after PVP; 8 = Eighth PVB after
PVB without pressure compensation, open center PVP
The spool flow is dependent on the supplied oil flow, Q
P
.
The characteristics apply to supply oil flow of 130 l/min [34.3 US gal/min] with the actuation of one basic
module and the supply flow level.
If several basic modules are activated at the same time, the characteristic depends on the load pressure
of the actuated basic modules.
Oil flow as a function of spool travel characteristic
Oil flow Q
A/B
as a function of supplied pump oil flow (Q
P
)
Technical Information
PVG 32 Proportional Valve Group
Technical characteristics
38 |
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The pressure drop of any oil flowing back to tank (Q
P
- Q
A/B
) is read on the curve for neutral flow pressure
in PVP.
Characteristic for fully displaced flow control spools
PVB without pressure compensation, closed center PVP
Set pressure difference between pump pressure and LS signal = 10 bar [145 psi].
Technical Information
PVG 32 Proportional Valve Group
Technical characteristics
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Set pressure difference between pump pressure and LS signal = 20 bar [290 psi].
The oil flow is dependent on the pressure difference between the pump pressure and the LS signal.
Normally the pressure difference is set at the LS pump regulator. Also take into consideration pressure
drop from the pump to the PVG valve group. e.g. long pipeline.
Oil flow characteristics for PVB at
@ pressure drop at max. main spool travel @ pressure drop for open spool in neutral position
Load-independent, pressure-compensated LS pressure limiting, pressure-compensated PVB
Technical Information
PVG 32 Proportional Valve Group
Technical characteristics
40 |
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PVLP, shock and PVLA, suction valves
PVLP is set at an oil flow of 10 l/min [2.6 US gal/min]. The shock valve PVLP is designed to absorb shock
effects. Consequently, it should not be used as a pressure relief valve.
If the working function requires the use of a pressure relief valve, a PVB basic module with built-in LS
A/B
pressure limiting valve should be used.
PVLP, shock valve characteristic PVLA, suction valve characteristic
Pressure build-up for pressure controlled spools
Max. oil flow can be reduced by about 50%
without limitation of maximum pressure by
limiting the main spool travel from 7 mm
[0.28 in] to 5.5 mm [0.22 in].
Pressure control spool flow characteristics
Size A: Size B:
Example 1
Technical Information
PVG 32 Proportional Valve Group
Technical characteristics
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Danfoss | March 2016 520L0344 | BC00000038en-US0710 | 41
Size C: Size D:
Example 2
Size E:
Examples of how to use the characteristics for pressure control spools
Example 1: Determining the oil flow Example 2: Determining the spool size
Given:
•
Spool type B
•
Pressure setting P
P
: 160 bar [2320 psi]
•
Load pressure, LS
A/B
: 100 bar [1450 psi]
Result:
Oil flow = 75 l/min [19.8 US gal/min]
Given:
•
Max. oil flow, Q
A/B
: 90 l/min [23.8 US gal/min]
•
Pressure setting P
P
: 150 bar [2175 psi]
•
Load pressure, P
LSA
: 125 bar [1810 psi]
Result: D spool
(see Pressure CS flow characteristics, size D)
Normally a smaller spool can be chosen with pressure control. It is our experience that the spool can be
one size smaller than with normal flow control.
Technical Information
PVG 32 Proportional Valve Group
Technical characteristics
42 |
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Characteristics for float position main spools
Characteristic of oil flow, spool travel and voltage
•
4.8 mm [0.19 in] spool displacement in direction A gives maximum oil flow to port A
•
4.8 mm [0.19 in] spool displacement in direction B gives maximum oil flow to port B
•
8 mm [0.32 in] spool displacement in direction B gives completely open float position A/B → T.
The spools have 4.8 mm spool travel in direction A and 8 mm travel in direction B:
For more information regarding electrical actuation of float spools please see PVE series 4 Technical
Information, 520L0553.
Pressure drop A/B → T at maximum spool travel within the proportional range (4.8 mm) [0.19 in]
Spools D and E have the same opening area for forward flow and return flow.
Spool E can give 100 l/min [26.4 US gal/min] pressure compensated oil flow due to a higher pressure
drop across spool E. This occurs during spool actuation only.
Technical Information
PVG 32 Proportional Valve Group
Technical characteristics
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Pressure drop A/B → T in float position
Technical Information
PVG 32 Proportional Valve Group
Technical characteristics
44 |
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Manually actuated PVG 32 – fixed displ. pump
Example schematic of manually actuated PVG 32 – fixed displacement pump
Technical Information
PVG 32 Proportional Valve Group
Hydraulic systems
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Danfoss | March 2016 520L0344 | BC00000038en-US0710 | 45
Electrically actuated PVG 32 – variable displ. pump
Example schematic of electrically actuated PVG 32 – variable displacement pump (electrical actuator, shock valves, relief valve)
Technical Information
PVG 32 Proportional Valve Group
Hydraulic systems
46 |
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Oil
The main duty of the oil in a hydraulic system is to transfer energy. It must also lubricate the moving parts
in hydraulic components, protect them against corrosion, and transport dirt particles and heat out of the
system. It is therefore important to choose the correct oil with the correct additives. This gives normal
operation and long working life.
Mineral oil
For systems with PVG 32 valves Danfoss recommends the use of mineral-based hydraulic oil containing
additives: Type HLP (DIN 51524) or HM (ISO 6743/4).
Non-flammable fluids
Phosphate-esters (HFDR fluids) can be used without special precautions. However, dynamic seals must be
replaced with FPM (Viton) seals. Please contact the Danfoss Sales Organization if the PVG 32 valve is to be
used with phosphate-esters.
The following fluids should only be used according to agreement with the Danfoss Sales Organization
for:
•
Water-glycol mixtures (HFC fluids)
•
Water-oil emulsions (HFB fluids)
•
Oil-water emulsions (HFAE fluids)
Particle content, degree of contamination
Biodegradable oils
PVG 32 valves can be used in systems with rapeseed oil. The use of rapeseed oil is conditioned by:
•
complying with the demands on viscosity, water content, temperature and filtering etc. (see chapters
below and technical data).
•
adapting the operating conditions to the directions of the oil supplier.
Before using other biodegradable fluids, please consult the Danfoss organization. Oil filtration must
prevent particle content from exceeding an acceptable level, i.e., an acceptable degree of contamination.
Maximum contamination for PVG 32 is 23/19/16 (see ISO 4406. Calibration in accordance with the ACFTD
method). In our experience a degree of contamination of 23/19/16 can be maintained by using a filter
fineness as described in the next section.
For more information, please see the Danfoss literature:
•
Design Guidelines for Hydraulic Fluid Cleanliness Technical Information, 520L0467
•
Hydraulic Fluids and Lubricants Technical Information, 521L0463
•
Experience with Biodegradable Hydraulic Fluids Technical Information, 521L0465.
Filtration
Effective filtration is the most important precondition in ensuring that a hydraulic system performs
reliably and has a long working life. Filter manufacturers issue instructions and recommendations. It is
advisable to follow these.
System filters
Where demands on safety and reliability are very high a pressure filter with bypass and indicator is
recommended. Experience shows that a 10 µm nominal filter (or finer) or a 20 µm absolute filter (or finer)
is suitable. It is our experience that a return filter is adequate in a purely mechanically operated valve
system. The fineness of a pressure filter must be selected as described by the filter manufacturer so that a
particle level of 23/19/16 is not exceeded. The filter must be fitted with pressure gauge or dirt indicator to
make it possible to check the condition of the filter. In systems with differential cylinders or accumulators
Technical Information
PVG 32 Proportional Valve Group
Other operating conditions
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the return filter must be sized to suit the max. return oil flow. Pressure filters must be fitted to suit max.
pump oil flow.
Internal filters
The filters built into PVG 32 are not intended to filter the system but to protect important components
against large particles. Such particles can appear in the system as a result of pump damage, hose fracture,
use of quick-couplings, filter damage, starting up, contamination, etc. The filter in the electrical actuator
PVE protecting the solenoid valves has a mesh of 150 µm. Bursting pressure drop for internal filters is 25
bar [360 psi].
Technical Information
PVG 32 Proportional Valve Group
Other operating conditions
48 |
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PVG 32 Dimensions
Legend:
F: Shock and suction valve, PVLP
G: Pressure gauge connection: G¼, 12 mm [½ –20, 0.47
in] deep
H: Plug for external pilot oil supply, PVPC: G½, 12 mm [½
–20, 0.47 in] deep
I: Electrical LS unloading valve, PVPX
J: LS connection: G¼, 12 mm [½–20; 0.47 in or
9
∕
16
–18, 0.5
in] deep
K: Fixing holes: M8 × min. 10 [
5
∕
16
–18; 0.39 in] deep
L: Port A and B: G½, 14 mm [
7
∕
8
–14; 0.65 in] deep
M: LX connection: PVS; G
1
∕
8
, 10 mm [
3
∕
8
–24; 0.39 in] deep
and
PVSI; G¼, 12 mm [½ –20; 0.47 in] deep
N: LS pressure limiting valve
O: Tank connection; G¾, 16 mm [1
1
∕
16
–12; 0.75 in] deep
P: Pressure relief valve
Q: Pump connection; G½, 14 mm [
7
∕
8
–14; 0.65 in] deep or
G¾, 16 mm [1
1
∕
16
–12; 0.75 in] deep
R: LS
A
and LS
B
connections; G¼, 12 mm deep [
9
∕
16
–18, 0.5
in] deep
S: Pp, pilot pressure connection G
PVB 1 2 3 4 5 6 7 8 9 10 11 12
L1 mm 82 130 178 226 274 322 370 418 466 514 562 610
[in] [3.23] [5.12] [7.01] [8.90] [10.79] [12.68] [14.57] [16.46] [18.35] [20.24] [562] [610]
L2 mm 140 189 238 287 336 385 434 483 527 576 622 670
in] [5.51] [7.44] [9.37] [11.30] [13.23] [15.16] [17.09] [19.02] [20.95] [22.87] [622] [670]
Technical Information
PVG 32 Proportional Valve Group
Dimensions
©
Danfoss | March 2016 520L0344 | BC00000038en-US0710 | 49
F
max.290.50[11.437]
107[4.21]
max.290.50[11.437]
129[5.08]
95[3.74]
7[0.28]
M
85[3.35]
17[0.67]
A-A
110[4.33]
60[2.36]
P
V
D
85[3.35]
58.5[2.303]
32[1.26]
6.5[0.256]
33[1.30]
7[0.28]
max.200.5[7.894]
13[0.51]
110[4.33]
B-B
60[2.36]
110[4.33]
C-C
60[2.36]
7[0.28]
45[1.77]
7[0.28]
49.5[1.949]
P
V
M
R
/
F
107[4.21]
117[4.61]
139[5.472]
~ 165[6.50]
44 [1.732]
89.5[3.524]
85.5[3.366]
PVEO
PVEM/PVEH/
P
V
H
V310141.A
PVES
F : G ¼, 12 mm deep [½ in - 20, 0.47 in deep]
PVM, control lever positions
Base with an angle of 37.5° Base with an angle of 22.5°
37.5˚
67.5˚
97.5˚
127.5˚
157.5˚
187.5˚
19.5˚
19.5˚
V310018.A
22.5˚
52.5˚
82.5˚
112.5˚
142.5˚
172.5˚
19.5˚
19.5˚
V310014.A
Technical Information
PVG 32 Proportional Valve Group
Dimensions
50 |
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The angle of the handle is determined by which side of the handle that is mount towards the base. If a
22.5° angle is needed the "dot" on the handle is not visible. If 37.5° is needed the dot should be visible.
Surface treatment
The PVG valve has as standard, an untreated surface. In certain applications, depend on different factors,
such as: salty environment, large temperature changes, high humidity, rust can develope on the surface.
This will not affect the performance of the PVG valve group. To prevent/reduce rust development,
Danfoss recommend the PVG valve group to be painted. Rust on the surface is not seen as a valid
complaint issue, neither on painted or unpainted PVG valve groups.
Technical Information
PVG 32 Proportional Valve Group
Dimensions
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PVP, pump side modules
Symbol Description Code number
Open center pump side module for pumps
with fixed displacement.
For purely mechanically actuated valve
groups
P = G ½
T = G ¾
157B5000
P = 7/8–14
T = 1 1/16–12
157B5200
P, T = G ¾ 157B5100
P, T = 1 1/16–12 157B5300
Closed center pump side module for pumps
with vaiable displacement.
P = G ½
T = G ¾
157B5001
P = 7/8–14
T = 1 1/16–12
157B5201
For purely mechanically actuated valve
groups.
P, T = G ¾ 157B5101
P, T = 1 1/16–12 157B5301
Open center pump side module for pumps
with fixed displacement.
With pilot oil supply for electrically actuated
valves.
P = G ½
T = G ¾
157B5010
P = 7/8–14
T = 1 1/16–12
157B5210
P, T = G ¾ 157B5110
P, T = 1 1/16–12 157B5310
Closed center pump side module for pumps
with variable displacement.
With pilot oil supply for electrically actuated
valves.
P = G ½
T = G ¾
157B5011
P = 7/8–14
T = 1 1/16–12
157B5211
P, T = G ¾ 157B5111
P, T = 1 1/16–12 157B5311
Open center pump side module for pumps
with fixed displacement.
With pilot oil supply for electrically actuated
valves
Connection for electrical LS unloading valve,
PVPX (not incl.)
P = G ½
T = G ¾
157B5012
P = 7/8–14
T = 1 1/16–12
157B5212
P, T = G ¾ 157B5112
P, T = 1 1/16–12 157B5312
Closed center pump side module for pumps
with variable displacement
With pilot oil supply
Connection for electrical LS unloading valve,
PVPX (not incl.)
P = G ½
T = G ¾
157B5013
P = 7/8–14
T = 1 1/16–12
157B5213
P, T = G ¾ 157B5113
P, T = 1 1/16–12 157B5313
Connections:
P = G ½ in; 14 mm deep or G ¾ in; 16 mm deep / LS, M = G ¼ in; 12 mm deep / T = G ¾ in; 16 mm deep.
P = 7/8–14; 0.65 in deep or 1 1/16–12; 0.75 in deep / LS, M = ½–20; 0.47 in deep / T = 1 1/16–12; 0.75 in
deep.
Technical Information
PVG 32 Proportional Valve Group
Modules symbols, description and code numbers
52 |
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PVP, pump side modules
Symbol Description Code number
Open center pump side module for pumps with fixed
displacement.
For mechanical actuated valves.
Connection for LS unloading valve, PVPX (not incl)
P, T = G ¾ 157B5102
Closed center pump side module for pumps with
vaiable displacement.
For mechanical actuated valves.
Connection for LS unloading valve, PVPX (not incl)
P, T = G ¾ 157B5103
Open center pump side module for pumps with fixed
displacement.
With pilot oil supply for electrical actuation and
connection for pilot oil pressure
Incl. check valve
P, T = G ¾ 157B5180
P, T = 1 1/16–12
LS connection =
9/16–18
157B5380
Closed center pump side module for pumps with
variable displacement.
With pilot oil supply for electrical actuation and
connection for pilot oil pressure
Incl. check valve
P, T = G ¾ 157B5181
P, T = 1 1/16–12
LS connection =
9/16–18
157B5381
Open center pump side module for pumps with fixed
displacement.
With pilot oil supply for hydraulic actuation and
connection for pilot oil pressure
P, T = G ¾ 157B5190
P, T = 1 1/16–12
LS connection =
9/16–18
157B5390
Closed center pump side module pumps with variable
displacement
With pilot oil supply for hydraulic actuation and
connection for pilot oil pressure
P, T = G ¾ 157B5191
P, T = 1 1/16–12
LS connection =
9/16–18
157B5391
Connections:
P, T = G ¾ in; 16 mm deep / LS, M = G ¼ in; 12 mm deep
P, T = 1 1/16–12; 0.75 in deep / LS, M = ½–20; 0.47 in deep.
Technical Information
PVG 32 Proportional Valve Group
Modules symbols, description and code numbers
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PVB, basic modules
PVB, basic modules – without adjustable LS
A/B
pressure limiting valves
Symbol Description Code number
No facilities for
shock valves A/B
Facilities for shock
valves A/B
Without load drop check valve and
pressure compensator.
Can be used where load holding
valves prevent oil from flowing
back through channel P.
G ½
14 mm deep
157B6000 157B6030
7/8–14
0.65 in deep
157B6400 157B6430
Load drop check valve. G ½
14 mm deep
157B6100 157B6130
7/8–14
0.65 in deep
157B6500 157B6530
Load drop check valve.
LSA/B shuttle valve.
To be used with float position
spools.
G ½
14 mm deep
— 157B6136
7/8–14
0.65 in deep
— 157B6536
Non-damped compensator valve G ½
14 mm deep
157B6200 157B6230
7/8–14
0.65 in deep
157B6600 157B6630
V310411.A
Without compensator valve
LSA/B shuttle valve
G ½
14 mm deep
— 11071832
7/8–14
0.65 in deep
— —
Technical Information
PVG 32 Proportional Valve Group
Modules symbols, description and code numbers
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PVB, basic modules – without adjustable LS
A/B
pressure limiting valves (continued)
Symbol Description Code number
No facilities for
shock valves A/B
Facilities for shock
valves A/B
With damped compensator valve G ½
14 mm deep
157B6206 157B6236
7/8–14
0.65 in deep
11036629 11036630
PVB, basic modules – with adjustable LS
A/B
pressure limiting valves
Symbol Description Code number
No facilities for
shock valves A/B
Facilities for
shock valves A/B
With non-damped
compensator valve
Adjustable LSA/B pressure
limiting valves
External LS connection port
A/B.
Also used for float position
spools
G ½
14 mm
deep
157B6203 157B6233
7/8–14
0.65 in deep
157B6603 157B6633
Damped compensator valve
Adjustable LSA/B pressure
limiting valves
External LS connection port
A/B
G ½
14 mm deep
157B6208 157B6238
7/8–14
0.65 in deep
- 11036631
Technical Information
PVG 32 Proportional Valve Group
Modules symbols, description and code numbers
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PVLA, suction valve (fitted in PVB)
PVLA, suction valve
Symbol Description Code number
Suction valve for port A and/or B. 157B2001
Plug for connecting the nonactive port to tank, when using a
single acting spool.
157B2002
PVLP, shock and suction valve (fitted in PVB)
PVLP, shock/ and anti-cavitation valves
Code no.
157B....
2032 2050 2063 2080 2100 2125 2140 2150 2160 2175 2190
Settings bar 32 50 63 80 100 125 140 150 160 175 190
[psi] [460] [725] [914] [1160] [1450] [1813] [2031] [2175] [2320] [2538] [2755]
Code no.
157B....
2210 2230 2240 2250 2265
2280
2300 2320 2350 2380 2400
Settings bar 210 230 240 250 265 280 300 320 350 380 400
[psi] [3045] [3335] [3480] [3625] [3845] [4061] [4351] [4641] [5075] [5511] [5801]
PVLP, shock and suction valve
Symbol
Description
Shock and suction valve for port A and/or B.
(Not adjustable).
Lifetime 200.000 actuations.
Technical Information
PVG 32 Proportional Valve Group
Modules symbols, description and code numbers
56 |
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PVM, mechanical actuation
PVM, mechanical actuation
Symbol Description Code number
with stop screws w/o stop screws
PVM, Standard, spring centered
Individual oil flow adjustment to ports A and B
157B3171 157B3191
Without actuation lever and base.
Shaft for mounting of actuation lever
157B3173 157B3193
PVM, as standard, witout actuation lever.
With base for mounting of actuation lever
157B3174 157B3194
PVM, Standard, spring. Individual oil flow
adjustment to ports A and B. (Anodized)
157B3184 -
PVMD, cover for mechanical actuation
Symbol Description Material Code No. Anodized
— PVMD, Cover for purely mechanically operated valve aluminium 157B0001 no
aluminium 157B0009 yes
cast iron 157B0021 no
PVMR, friction detent
Symbol Description Material Code number Anodized
PVMR, Friction detent aluminium 157B0004 no
aluminium 157B0012 yes
cast iron 157B0024 -
PVMF, mechanical float position
Symbol Description Material Code number Anodized
PVMF,
Mechanical float position lock
aluminium 157B0005 no
Technical Information
PVG 32 Proportional Valve Group
Modules symbols, description and code numbers
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Danfoss | March 2016 520L0344 | BC00000038en-US0710 | 57
PVH, hydraulic actuation
PVH, hydraulic actuation
Symbol Description Material Code number Anodized
PVH, Cover for Hydraulic actuation
PVH 9/16-18 UNF
aluminium 157B0007 no
aluminium 157B0010 yes
cast iron 157B0014 no
PVH, Cover for Hydraulic actuation
PVH G1/4
aluminium 157B0008 no
aluminium 157B0011 yes
cast iron 157B0016 no
PVS, end plate
PVS, end plate
Symbol Description Mounting
threads
Code number
V310062.A
PVS, without active elements.
No connections
BSP 157B2000
SAE 157B2020
V310063.A
LX
PVS, without active elements.
Max. intermittend LX pressure
250 bar [3625 psi]
G 1/8 10 mm deep BSP 157B2011
3/8 in - 24; 0,39 in deep SAE 157B2021
V310062.A
PVSI, without active elements
Without connections.
BSP 157B2014
SAE 157B2004
V310063.A
LX
PVSI, without active elements
LX connections.
Max. intermittend LX pressure:
350 bar [5075 psi]
G 1/4 10 mm deep BSP 157B2015
1/2 in - 20; 0,47 in deep SAE 157B2005
For mounting threats please see the chapter Dimensions.
PVAS, assembly kit
PVAS, assembly kit
Code no,
157B...
0 1 2 3 4 5 6 7 8 9 10 11 12
PVB’s 8000 8001 8002 8003 8004 8005 8006 8007 8008 8009 8010 8061 8062
PVB + PVPVM - 8021 8022 8023 8024 8025 8026 8027 8028 8029 8030 8081 8082
Weight kg [lb] 0.1[0.2] 0.15
[0.3]
0.25
[0.6]
0.30
[0.7]
0.40
[0.9]
0.45
[1.0]
0.50
[1.1]
0.60
[1.3]
0.65
[1.4]
0.70
[1.6]
0.80
[1.7]
0.85
[1.8]
0.9 [2.0]
Technical Information
PVG 32 Proportional Valve Group
Modules symbols, description and code numbers
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PVPX, electrical LS unloaded valve
PVPX, electrical LS unloaded valve
Symbol Description Code number
PVPX, Normally open:
LS pressure relieved with no signal to PVPX
12 V 157B4236
24 V 157B4238
PVPX, Normally closed:
LS pressure relieved with signal to PVPX
12 V 157B4246
24 V 157B4248
PVPX, Normally open with manual override:
LS pressure relieved with no signal to PVPX
Manual override DE-selects LS-pump
12 V 157B4256
24 V 157B4258
- Plug 157B5601
PVPC, plug for external pilot oil supply
PVPC, plug for external pilot oil supply
Symbol Description Code number
PVP,
Plug without check valve for open
or closed center
G 1/2,
12 mm deep
157B5400
1/2 in - 20;
0.47 in deep
-
PVP,
Plug with check valve for
open center
G 1/2,
12 mm deep
157B5600
1/2 in - 20;
0.47 in deep
157B5700
Technical Information
PVG 32 Proportional Valve Group
Modules symbols, description and code numbers
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Danfoss | March 2016 520L0344 | BC00000038en-US0710 | 59
Standard FC spools
PVB is with LS
A/B
shuttle valve Code number 157B.... PVB is without LS
A/B
shuttle valve
Press. compensated flow: l/min [US gal/min] ISO symbol Symbol Press. compensated flow l/min [US gal/min]
F
130
[34.3]
E
100
[26.4]
D
65
[17.2]
C
40
[10.6]
B
25
[6.6]
A
10
[2.6]
AA
5 [1.3]
AA
5 [1.3]
A
10
[2.6]
B
25
[6.6]
C
40
[10.6]
D
65
[17.2]
E
100
[26.
4]
F
130
[34.3]
7026 7024 7023 7022 7021 7020 7025
4-way, 3-position
Closed neutral position
7005 7000 7001 7002 7003 700
4
7006
7126 7124 7123 7122 7121 7120 7125
4-way, 3-position
Throttled, open neutral position
7105 7100 7101 7102 7103 710
4
7106
- - - - - - -
3-way, 3-position
Closed neutral position, P → A
- 7200 7201 7202 7203 720
4
-
- - - - - - -
3-way, 3-position
Closed neutral position, P → B
- - 7301 7302 7303 730
4
-
- 7424 7423 7422 7421 - -
4-way, 3-position
Throttled, A → T in neutral position
- - 7401 7402 7403 740
4
7406
Technical Information
PVG 32 Proportional Valve Group
Module selection chart
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PVB is with LS
A/B
shuttle valve Code number 157B.... PVB is without LS
A/B
shuttle valve
- 7524 7523 7522 7521 - -
4-way, 3-position
Throttled, B → T in neutral position
- - 7501 7502 7503 750
4
-
- 7624 7623 7622 7621 7620 -
157-139.10
157-140.10
4-way, 4-position
Closed neutral position
Float P → B → F
- - - - - - -
Standard FC spools, hydraulic actuation
PVB is with LS
A/B
shuttle valve Code number 157B.... PVB is without LS
A/B
shuttle valve
Press. compensated flow: l/min [US gal/min] ISO symbol Symbol Press. compensated flow: l/min [US gal/min]
E
100
[26.4]
D
65
[17.2]
C
40
[10.6]
B
25
[6.6]
A
10
[2.6]
AA
5
[1.3]
AA
5
[1.3]
A
10
[2.6]
B
25
[6.6]
C
40
[10.6]
D
65
[17.2]
E
100
[26.4]
9024 9023 9022 9021 9020 9025
4-way, 3-position
closed neutral position
9005 9000 9001 9002 9003 9004
9124 9123 9122 9121 9120 9125
4-way, 3-position
Throttled open neutral position
9105 9100 9101 9102 9103 9104
FC spools for mechanical float position, PVMF
PVB is with LS
A/B
shuttle valve Code number 157B.... PVB is without LS
A/B
shuttle valve
Press. compensated flow: l/min [US gal/min] ISO symbol Symbol Press. compensated flow l/min [US gal/min]
F
130
[34.3]
E
100
[26.4]
D
65
[17.2]
C
40
[10.6]
B
25
[6.6]
A
10
[2.6]
AA
5
[1.3]
AA
5
[1.3]
A
10
[2.6]
B
25
[6.6]
C
40
[10.6]
D
65
[17.2]
E
100
[26.4]
F
130
[34.3]
Technical Information
PVG 32 Proportional Valve Group
Module selection chart
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Danfoss | March 2016 520L0344 | BC00000038en-US0710 | 61
PVB is with LS
A/B
shuttle valve Code number 157B.... PVB is without LS
A/B
shuttle valve
- 9824 9823 9822 9821 9820 9825
B A
T TP
157-454.10
4-way, 4 position
Closed neutral position
P → A → F
- - - - - - -
- 9624 623 9622 9621 - -
157-139.10
157-140.10
4-way, 4-position
Closed neutral position
Float P → B → F
- - - - - - -
FC spools for friction detent, PVMR
PVB is with LS
A/B
shuttle valve Code number 157B.... PVB is without LS
A/B
shuttle valve
Press. compensated flow: l/min [US gal/min] ISO symbol Symbol Press. compensated flow: l/min [US gal/min]
E
100
[26.4]
D
65
[17.2]
C
40
[10.6]
B
25
[6.6]
A
10
[2.6]
AA
5
[1.3]
AA
5
[1.3]
A
10
[2.6]
B
25
[6.6]
C
40
[10.6]
D
65
[17.2]
E
100
[26.4]
9724 9723 9722 9721 9720 -
4-way, 3-position
closed neutral position
- 9700 9701 9702 9703 9704
9734 9733 9732 9731 9730 -
4-way, 3-position
Throttled open neutral position
- 9710 9711 9712 9713 9714
FC spools with linear flow characteristic
PVB is with LS
A/B
shuttle valve Code number 157B.... PVB is without LS
A/B
shuttle valve
Press. compensated flow: l/min [US gal/min] ISO symbol Symbol Press. compensated flow: l/min [US gal/min]
F
130
[34.3]
E
100
[26.4]
D
65
[17.2]
C
40
[10.6]
B
25
[6.6]
A
10
[2.6]
AA
5
[1.3]
AA
5
[1.3]
A
10
[2.6]
B
25
[6.6]
C
40
[10.6]
D
65
[17.2]
E
100
[26.4]
F
130
[34.3]
- 9774 9773 9772 9771 - -
4-way, 3-position
Closed neutral position
- 9750 9751 9752 9753 9754 -
Technical Information
PVG 32 Proportional Valve Group
Module selection chart
62 |
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PVB is with LS
A/B
shuttle valve Code number 157B.... PVB is without LS
A/B
shuttle valve
- 9784 9783 9782 9781 - -
4-way, 3-position
Throttled, open neutral position
- 9760 9761 9762 9763 9764 -
- - - - - - -
4-way, 3-position
Throttled, A → T in neutral position
- - - - - 9794 -
- - - - - - -
4-way, 3-position
B → T in neutral position
- - - - - 9804 -
Standard PC spools
PVB is with LS
A/B
shuttle valve Code number 157B.... PVB is without LS
A/B
shuttle valve
Press. compensated flow: l/min [US gal/min] ISO symbol Symbol Press. compensated flow: l/min [US gal/min]
E
100
[26.4]
D
65
[17.2]
C
40
[10.6]
B
25
[6.6]
A
10
[2.6]
AA
5
[1.3]
AA
5
[1.3]
A
10
[2.6]
B
25
[6.6]
C
40
[10.6]
D
65
[17.2]
E
100
[26.4]
- 7033 7032 7031 7030 7035
4-way, 3-position
Closed neutral position, PC → A and B
7015 7010 7011 7012 7013 -
7134 7133 7132 7131 7130 7135
4-way, 3-position Throttled, open neutral position,
PC → A and B
7115 7110 7111 7112 7113 -
7064 7063 7062 7061 - -
4-way, 3-position
Closed neutral position, PC → A
- 7040 7041 7042 7043 7044
Technical Information
PVG 32 Proportional Valve Group
Module selection chart
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PVB is with LS
A/B
shuttle valve Code number 157B.... PVB is without LS
A/B
shuttle valve
7074 7073 7072 7071 - -
4-way, 3-position
Closed neutral position, PC → B
- 7050 7051 7052 7053 7054
7164 7163 7162 7161 - -
4-way, 3-position
Throttled, open neutral position, PC → A
- 7150 7151 7152 7153 7154
7174 7173 7172 7171 - -
4-way, 3-position
Throttled, open neutral position, PC → B
- 7150 7151 7152 7153 7154
- 7473 7472 7471 7470 -
4-way, 3-position
Throttled, A → T neutral position, PC → B
- - - 7452 7453 -
- 7563 7562 - - -
4-way, 3-position
Throttled, B→ T neutral position , PC → A
- - 7541 7542 7543 -
Standard PC spools, hydraulic actuation
PVB is with LS
A/B
shuttle valve Code number 157B.... PVB is without LS
A/B
shuttle valve
Press. compensated flow: l/min [US gal/min] ISO symbol Symbol Press. compensated flow: l/min [US gal/min]
E
100
[26.4]
D
65
[17.2]
C
40
[10.6]
B
25
[6.6]
A
10
[2.6]
AA
5
[1.3]
AA
5
[1.3]
A
10
[2.6]
B
25
[6.6]
C
40
[10.6]
D
65
[17.2]
E
100
[26.4]
- - - - - -
4-way, 3-position
Closed neutral position, PC → A and B
9015 9010 9011 9012 - -
Technical Information
PVG 32 Proportional Valve Group
Module selection chart
64 |
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Danfoss | March 2016 520L0344 | BC00000038en-US0710
PVB is with LS
A/B
shuttle valve Code number 157B.... PVB is without LS
A/B
shuttle valve
- - - - - -
4-way, 3-position
Closed neutral position, PC → A
- - - 9042 9043 9044
- - - - - -
4-way, 3-position
Closed neutral position, PC → B
- - - 9052 9053 9054
PVB, basic valves
V310168.A
0
16
a
0
14
15
0
c
c
b
1-13
PVB, basic valves
Description No facilities for shock valves A and B Facilities for shock valves A and B
G ½ 7∕8 - 14 UNF G ½ 7∕8 - 14 UNF
Without compensator /check valve 157B6000 157B6400 157B6030 157B6430
With check valve 157B6100 157B6500 157B6130 157B6530
With check valve and LSA/B shuttle valve - - 157B6136 157B6536
With compensator valve 157B6200 157B6600 157B6230 157B6630
With damped compensator valve 157B6206 - 157B6236 -
With compensator valve, LSA/B relief valve and LSA/B shuttle
valve
157B6203 157B6603 157B6233 157B6633
Technical Information
PVG 32 Proportional Valve Group
Module selection chart
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Danfoss | March 2016 520L0344 | BC00000038en-US0710 | 65
PVB, basic valves (continued)
Description No facilities for shock valves A and B Facilities for shock valves A and B
G ½ 7∕8 - 14 UNF G ½ 7∕8 - 14 UNF
With damped compensator valve,
LSA/B relief valve and LSA/B shuttle valve
157B6208 - 157B6238 -
Weight kg [lb] 3.1 [6.8] 3.0 [6.6]
PVPC, plugs
Description G 1/4 1/220 UNF Weight
kg [lb]
External pilot supply 157B5400 — 0.05 [0.1]
External pilot supply incl. check valve 157B5600 157B5700 0.05 [0.1]
PVM, mechanical actuation
Description Alu Alu anodized Cast iron Angle
with stop screws without stop
screws
with stop screws with stop screws
Standard 157B3171 157B3191 157B3184 157B3161 22.5°/37.5°
Standard with base, without arm and button 157B3174 157B3194 — — 22.5°/37.5°
Standard without base, without arm and
button
157B3173 157B3193 157B3186 — —
Weight kg [lb] 0.4 [0.9] 0.8 [1.8]
PVAS, assembly kit
Code no.
157B....
0 1 2 3 4 5 6 7 8 9 10 11 12
PVB’s 8000 8001 8002 8003 8004 8005 8006 8007 8008 8009 8010 8061 8062
PVB +
PVPVM
- 8021 8022 8023 8024 8025 8026 17B8027 8028 8029 8030 8081 8082
Weight
kg [lb]
0.1 [0.2] 0.15 [0.3] 0.25 [0.6] 0.30 [0.7] 0.40 [0.9] 0.45 [1.0] 0.50 [1.1] 0.60 [1.3] 0.65 [1.4] 0.70 [1.6] 0.80 [1.7] 0.85 [1.8] 0.9 [2.0]
PVP, pump side module
PVP, pump side module
Description Without pilot supply With pilot supply
for PVE for PVE with
facilit. for PVPX
for PVE for PVE and
facilit. for
PVPX
for PVE and pilot
oil pressure take-
off
for PVH and pilot
oil pressure take-
off
Open
center
P = G1/2, T = G3/4 157B5000 - 157B5010 157B5012 - -
P = 7/8 -14, T = 11/16 -12 157B5200 - 157B5210 157B5212 - -
P = G3/4, T = G3/4 157B5100 157B5102 157B5110 157B5112 157B5180 157B5190
P = 1 1/16 -12, T = 11/16 -12 157B5300 - 157B5310 157B5312 157B5380 157B5390
Technical Information
PVG 32 Proportional Valve Group
Module selection chart
66 |
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PVP, pump side module (continued)
Description Without pilot supply With pilot supply
for PVE for PVE with
facilit. for PVPX
for PVE for PVE and
facilit. for
PVPX
for PVE and pilot
oil pressure take-
off
for PVH and pilot
oil pressure take-
off
Closed
center
P = G1/2 , T = G3/4, 157B5001 - 157B5011 157B5013 - -
P = 7/8 -14, T = 11/16 -12 157B5201 - 157B5211 157B5213 - -
P = G3/4, T = G3/4, 157B5101 157B5103 157B5111 157B5113 157B5181 157B5191
P = 11/16 -12, T = 1 1/16 -12 157B5301 - 157B5311 157B5313 157B5381 157B5391
Weight kg [lb] 3 [6.6]
PVPX, electrical LS pressure relief valves
Description/
Supply voltage
Code No. Hirsch. Code No.
AMP
Weight
kg [lb]
Normally open 12 V 157B4236 157B4981 0.3 [0.7]
24 V 157B4238 157B4982
Normally closed 12 V 157B4246 157B4983
24 V 157B4248 157B4984
Normally open with manual override 12 V 157B4256 157B4985
24 V 157B4258 157B4986
Plug 157B5601 0.06 [0.13]
PVS and PVSI, end plate
Description BSP SAE Weight
kg [lb]
PVS, without connections 157B2000 157B2020 0.5 [1.1]
PVS, with LX connection
G 1/8 [3/8 -24 UNF]
157B2011 157B2021
PVSI, without connections 157B2014 157B2004 1.7 [3.6]
PVSI, with LX connections
G 1/4 [1/2 -20 UNF]
157B2015 157B2005
PVLP, shock/ and anti-cavitation valves
Code no. 157B203
2
157B205
0
157B206
3
157B208
0
157B210
0
157B212
5
157B214
0
157B215
0
157B216
0
157B217
5
157B219
0
Settings bar 32 50 63 80 100 125 140 150 160 175 190
[psi] [460] [725] [914] [1160] [1450] [1813] [2031] [2175] [2320] [2538] [2755]
Code no. 157B221
0
157B223
0
157B224
0
157B225
0
157B226
5
157B228
0
157B230
0
157B232
0
157B235
0
157B238
0
157B240
0
Settings bar 210 230 240 250 265 280 300 320 350 380 400
[psi] [3045] [3335] [3480] [3625] [3845] [4061] [4351] [4641] [5075] [5511] [5801]
Technical Information
PVG 32 Proportional Valve Group
Module selection chart
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Danfoss | March 2016 520L0344 | BC00000038en-US0710 | 67
PVE, electrical actuation
PVE, electrical actuation
Description Code No. Weight
kg [lb]
Hirsch AMP Deut.
PVEO, on-off 12 V 157B4216 157B4901 157B4291 0.6 [1.3]
24 V 157B4228 157B4902 157B4292
PVEO-R, on/off 12 V 157B4217 157B4903 -
24 V 157B4229 157B4904 -
PVEM, prop. medium –
Standard
12 V 157B4116 - - 0.9 [2.0]
24 V 157B4128 - -
PVEM, prop. medium – Float
– > B
12 V 157B4416 - - 1.0 [2.2]
24 V 157B4428 - -
PVEA, active fault mon.
PVEA, passive fault mon.
-
-
157B4734
157B4735
157B4792
-
0.9 [2.0]
PVEA-DI, active fault mon.
PVEA-DI, passive fault mon.
-
-
157B4736
157B4737
157B4796
-
PVEH active fault mon.
PVEH passive fault mon.
157B4032
157B4033
157B4034
157B4035
157B4092
157B4093
1.0 [2.2]
PVEH float – > B, act. fault
PVEH float – > A, act. fault
157B4332
-
-
157B4338
157B4392
-
PVEH- DI active fault mon.
PVEH - DI passive fault mon.
-
-
157B4036
157B4037
157B4096
-
PVES, active fault mon.
PVES, passive fault mon.
157B4832
157B4833
157B4834
157B4835
157B4892
-
PVMD, PVMR, PVMF, PVH covers
Description Code No. Material Anodized Weight
kg [lb]
PVMD
Cover for PVB
157B0001 aluminium no 0.1 [0.2]
157B0009 yes
157B0021 cast iron N/A 0.9 [2.0]
PVMR
(Friction Detent)
157B0004 aluminium no 0.3 [0.6]
157B0012 yes
157B0024 cast iron N/A
PVMF
(Mech. float position)
157B0005 aluminium no
Hydraulic actuation PVH 9/16-18 UNF 157B0007 aluminium no 0.2 [0.4]
157B0010 yes
157B0014 cast iron N/A
Hydraulic actuation PVH G1/4 157B0008 aluminium no
157B0011 yes
157B0016 cast iron N/A 0.9 [2.0]
Technical Information
PVG 32 Proportional Valve Group
Module selection chart
68 |
©
Danfoss | March 2016 520L0344 | BC00000038en-US0710
PVLA, anti-cavitation valve
Description Code No. Weight
kg [lb]
Plug A or B 157B2002 0.04 [0.09]
Valve A or B 157B2001 0.05 [0.10]
Technical Information
PVG 32 Proportional Valve Group
Module selection chart
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Danfoss | March 2016 520L0344 | BC00000038en-US0710 | 69
The form can be obtained from the Danfoss Sales Organization. An order form for PVG 32 hydraulic valve
is shown on the page PVG 32 order specification.
Both the module selection chart on the previous pages and the order form are divided into fields 0,
1-1-12, 13, 14, 15, a, b, and c.
Each module has its own field:
0:
•
Pump side module PVP
•
Plug for external pilot oil supply PVPC
•
Electrical LS unloading valve PVPX
1-12: Basic valves PVB
13: Main spool PVBS
a: Mechanical actuator PVM (or PVE when option mounted)
b:
•
Shock and suction valve PVLP
•
Suction valve PVLA
c:
•
Cover for mechanical actuation PVMD
•
Cover for hydraulic actuation PVH
•
Electrical actuators PVE (or PVM when option mounted)
14: End plate PVS
15: Assembly kit PVAS
Please state:
•
Code numbers of all modules required
•
Required setting (P) for pump side module
•
Required setting of LS
A/B
pressure limiting valves, see pressure setting guidance below.
Standard and option assembly
The PVG 32 valve group is assembled the way the module selection chart shows if the code number for
PVM is written in field 'a', and the code number for PVMD, PVE or PVH in field 'c'.
The valve group is assembled so that the mechanical actuator is mounted on the opposite end of the
basic module, if the code number for PVM is written in field 'c' of the order form and the code numbers
for PVMD, PVE or PVH in field 'a'.
Reordering
The space at the top right-hand corner of the form is for Danfoss to fill in. The code number for the whole
of the specified valve group (PVG No.) is entered here.
In the event of a repeat order all you have to do is enter the number Danfoss has given on the initial
confirmation of order.
Pressure setting limits
The maximum setting pressure for the pressure limiting valves LS
A
or LS
B
depends on the chosen
pressure setting for shock valve PVLP. The maximum values recommended to avoid interaction can be
read in the following table.
Technical Information
PVG 32 Proportional Valve Group
Order specification
70 |
©
Danfoss | March 2016 520L0344 | BC00000038en-US0710
The figures in the table have been calculated according to the following expressions:
•
PVLP ≤150 bar: LS
A/B
≤ 0.8 × P
PVLP
•
PVLP >150 bar: P
PVLP
- LS
A/B
≥ 30 bar.
Max. pressure setting of LS
A
and LS
B
valves relative to PVLP shock valve
Pressure for PVLP Max. for LS
A/B
Min. for LS
A/B
bar [psi] bar [psi] bar [psi]
32 [460] - - 30 bar] [435 psi]
50 [725] 40 [580]
63 [914] 50 [720]
80 [1160] 64 [930]
100 [1450] 80 [1160]
125 [1813] 100 [1450]
140 [2031] 112 [1625]
150 [2175] 120 [1740]
160 [2320] 130 [1885]
175 [2838] 145 [2100]
190 [2755] 160 [2320]
210 [3045] 180 [2610]
230 [3335] 200 [2900]
240 [3480] 210 [3045]
250 [3625] 220 [3190]
265 [3843] 235 [3408]
280 [4061] 250 [3625]
300 [4351] 270 [3915]
320 [4641] 290 [4205]
350 5075 320 4641
380 5511 350 5075
400 5801 370 5366
Technical Information
PVG 32 Proportional Valve Group
Order specification
©
Danfoss | March 2016 520L0344 | BC00000038en-US0710 | 71
PVG 32 specification sheet
Technical Information
PVG 32 Proportional Valve Group
Order specification
72 |
©
Danfoss | March 2016 520L0344 | BC00000038en-US0710
Technical Information
PVG 32 Proportional Valve Group
©
Danfoss | March 2016 520L0344 | BC00000038en-US0710 | 73
Technical Information
PVG 32 Proportional Valve Group
74 |
©
Danfoss | March 2016 520L0344 | BC00000038en-US0710
Technical Information
PVG 32 Proportional Valve Group
©
Danfoss | March 2016 520L0344 | BC00000038en-US0710 | 75
Danfoss Power Solutions is a global manufacturer and supplier of high-quality hydraulic and
electronic components. We specialize in providing state-of-the-art technology and solutions
that excel in the harsh operating conditions of the mobile off-highway market. Building on
our extensive applications expertise, we work closely with our customers to ensure
exceptional performance for a broad range of off-highway vehicles.
We help OEMs around the world speed up system development, reduce costs and bring
vehicles to market faster.
Danfoss – Your Strongest Partner in Mobile Hydraulics.
Go to www.powersolutions.danfoss.com for further product information.
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Phone: +86 21 3418 5200
Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products
already on order provided that such alterations can be made without changes being necessary in specifications already agreed.
All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.
©
Danfoss | March 2016 520L0344 | BC00000038en-US0710
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