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Reference: 100-P-000172-E-03
Issue: 08.2020
Proportional Directional Valves
Series LVS08 and LVS12 – Preference program
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Contents Page
1 General
description 5
..................................................................
1.1 Advantages 5
..................................................................
1.2 Application
examples 5
..........................................................
1.3 Pump
systems 5
................................................................
1.4 General
technical
data 7
.........................................................
2 Inlet
sections 8
.......................................................................
2.1 General
technical
data 8
.........................................................
2.2 Characteristic
curves 8
..........................................................
2.3 Functions 8
....................................................................
2.4 Overview
inlet
sections 9
.........................................................
2.5 Dimensions 13
..................................................................
3 Intermediate
sections 16
................................................................
3.1 Characteristic
curves 16
..........................................................
3.2 Overview
of
items,
with
part
number 16
.............................................
3.3 Overview
of
intermediate
sections 16
...............................................
3.4 Dimensions 18
..................................................................
4 Directional
valve
sections 19
............................................................
4.1 General
technical
data 19
.........................................................
4.2 Technical
data
for
pressure
relief
/
make-up
valve 19
.................................
4.3 Characteristic
curves 19
..........................................................
4.4 Functions 20
....................................................................
5 Directional
sections
LVS08
–
with
ON/OFF
or
proportional
solenoids 21
.......................
5.1 General
technical
data 21
.........................................................
5.2 Characteristic
curve 21
...........................................................
5.3 LVS08
Standard 22
..............................................................
5.4 LVS08
Standard
with
pressure
relief
/
make-up
valve 24
...............................
5.5 LVS08
Standard,
surface
for
bolt-on
valve 26
........................................
5.6 LVS
Standard,
surface
for
bolt-on
valves,
with
pressure
relief
/
make
up
valve 28
.........
5.7 LVS08
with
integrated
double
seat
valve 30
.........................................
5.8 LVS08
with
additional
manual
handlever 32
.........................................
5.9 LVS08
with
additional
manual
handlever
and
pressure
relief
/
make-up
valve 34
..........
6 Bolt-on
sections
LVS08 36
..............................................................
6.1 Function 36
.....................................................................
6.2 Overview
of
items,
with
part
number 36
.............................................
6.3 Overview
bolt-on
sections 36
......................................................
6.4 Dimensions 38
..................................................................
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7 Directional
valve
sections
LVS12
–
electrohydraulic,
two-stage 39
............................
7.1 General
technical
data 39
.........................................................
7.2 Characteristic
curve 40
...........................................................
7.3 LVS12
Standard 41
..............................................................
7.4 LVS12
with
pressure
relief
/make-up
valves 43
.......................................
7.5 LVS12
with
additional
manual
handlever 45
.........................................
7.6 LVS12
with
additional
manual
operation,
pressure
relief
/
make-up
valve 47
..............
8End
sections 49
.......................................................................
8.1 Overview
of
items,
with
part
number 49
.............................................
8.2 Overview
of
end
sections 49
.......................................................
8.3 Dimensions 49
..................................................................
9 Configuration
of
control
blocks 50
........................................................
9.1 Ordering
example 50
.............................................................
9.2 Assembly
kit 50
..................................................................
10 Fluid 51
..............................................................................
11 Liability 51
............................................................................
12 Note 51
...............................................................................
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1 General description
Manufacturers of machinery and equipment depend on fast
response times and the reliable supply of machine compon
ents. By using the preference programme shown in this
publication, you benefit from the straightforward ordering
and on-time delivery of the fast-moving products from the
LVS proportional directional valve modules.
1
2
3
6
4
5
7
8
Item Description
1 Inlet section
2 Direct acting, solenoid-operated directional
valve, on/off or proportional solenoid
3 Bolt-on section
4 Intermediate section
5 2-stage, proportional, electrohydraulically oper
ated directional valve
6 2-stage, proportional, electrohydraulically oper
ated directional valve with additional manual
handlever
7 End section
8 Threaded tie rods
1.1 Advantages
Short and reliable lead times (we maintain an inventory of
preferred products)
Reduced customer inventories
Rapid reaction time to changes in customer- and market-
requirements
Adaptable valve-block configuration
1.2 Application examples
Agricultural equipment
Forestry machines
Construction equipment
Transportation and materials handling
Municipal vehicles and equipment
1.3 Pump systems
1.3.1 System with fixed-displacement pump
The valve block includes a 3-way pressure compensator,
directional sections and block termination components. In
the neutral position, the 3-way pressure compensator is un
loaded to tank and the entire flow being supplied to the valve
passes through the 3-way compensator to tank with mini
mal off-load pressure drop.
When a directional section is operated, the actuator pres
sure is signalled to the 3-way pressure compensator. The
3-way compensator maintains the Δp at a constant level. So
the flow rate is independent of the load and proportional to
the open flow area of the metering orifice in the directional
valve.
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1.3.2 System with variable-displacement pump
In systems with a variable-displacement pump (load-sens
ing system), as well as the normal P line, the control line is
also connected to the pump control. When all directional
valves are in the neutral position, the control line is con
nected to tank and the pump de-strokes. When a directional
section is operated, the actuator pressure is signalled to the
pump control and the pump goes on-stroke until the defined
control Δp is reached.
1.3.3 Post-compensated system
(proportional flow-sharing principle)
When a valve system that is designed on the proportional
flow-sharing principle is receiving sufficient pump flow and
has adequately-sized inlet lines, it operates functionally just
like a system with upstream compensators. But two funda
mentally different characteristics distinguish a system with
a proportional flow-sharing circuit:
The pressure drop across the spool metering orifice is con
trolled not by the individual compensator, but by the most
highly loaded actuator via the system pressure control
(pump controller with load-sensing systems, or system
pressure compensator with fixed-displacement pump sup
ply).
On the individual compensators of the other actuators, the
highest system load is reproduced behind the spool meter
ing orifice and thus the system pressure control also applies
to these actuators, and the pressure compensators coun
teract the effects of the different load pressures on each
section.
When a system with upstream compensators demands
more total flow than the pump can supply, the system only
reduces the flow to the actuator with the highest load (until
it stops).
In a post-compensated system, with LS pump supply wi
thout inlet compensator, the available LSΔp is used to gene
rate the flow. In contrast to upstream compensators, this
can alter the flow rate to all the actuator ports.
In this case, the LSΔp for the pump is split into the Δp loss
in the supply line from the pump to the valve block and the
effective Δp at the control spool.
It is important to note that, as the flow rate increases, the Δp
split ratio changes.
After the post-compensated systems that jointly are sup
plied by one pump, it always have to be the highest load
pressure in the system that is signalled i.e. sensed.
Also in the case of several valve blocks, it is always the high
est actuator load pressure in the system after all post-com
pensated systems that must be signalled i.e. sensed.
By using an inlet compensator, a constant Δp is maintained,
as long as the pump can supply the flow that is required. If
the actuator flow demanded is higher than the maximum
pump delivery, the compensator Δp is no longer reached
and the compensator opens completely. The Δp now sets
itself automatically, at a level below the compensator Δp.
1.3.4 Example showing a downstream pressure compensator
The compensator with the
highest load pressure
goes into the signalling/
sensing position.
LS unloading
200 bar at all
compensators
Pipework losses
Ex. 5 bar
Metering orifice
System pressure
controller
LS*
max.
= LS
max
+ P
PC-spring
Load 1 Load 2 Load 3 Load 4
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1.4 General technical data
General characteristics Unit Description, value
Recommended mounting
orientation
With spool axis horizontal
Fluid temperature °C -20 … +80
Viscosity range mm
2
/s
For reliable operation 380 … 10
For rated performance 80 … 20
Minimum fluid cleanliness level ISO 4406 code 20/18/15
Pressure bar
LVS08 pump port max. 250
actuator port max. 280
tank port max. 200 static
LVS12 pump port max. 300
1)
actuator port max. 320
1)
tank port max. 50 static
Flow rate l/min
Maximum flow rate at the P inlet = 260
1)
Maximum flow rate at the actuator ports = 180 with control Δp of 12
bar
Hydraulic fluid
Recommendation: high-quality fluids with a mineral-oil base, such as
HLP oils to DIN 51524 part 2.
Biodegradable oils in groups HEES and HEPG can be used if the
manufacturer's instructions are followed.
For other fluids please contact Bucher Hydraulics.
Valve block size Max. 10 directional sections per valve block
1) For higher pressures and flow rates, please enquire.
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2 Inlet sections
2.1 General technical data
General characteristics Unit Description, value
Inlet pressure bar max. 300
1)
Nominal flow rate Open-Center systems l/min max. 200
Nominal flow rate Closed-Center systems l/min max. 260
Nominal flow rate, A and B to T l/min max. 300
1) For higher pressures, please enquire.
2.2 Characteristic curves
2.2.1 Priority valve
With no flow to downstream actuators
Q [l/min] = priority flow
p [bar} = load pressure at priority actuator
0
25
50
75
100
p [bar]
Q [l/min]
0 50 100 150 200
This characteristic curve is valid in conjunction with inlet
sections that have an additional priority function.
2.2.2 Bypass pressure with 3-way pressure
compensator in neutral position
Q [l/min] = flow rate through the block
p [bar] = pressure drop from P to T
0
2
4
6
8
10
12
14
16
18
20
0 20 40 60 80 100 120
CF*
p [bar]
Q [l/min]
CF2H
Definition of the inlet sections see section 2.4.2.
2.3 Functions
2.3.1 LS Unloading
The most highly loaded directional valve signals its load
pressure to the LS gallery when it is in a working position.
In the neutral position, no load is signalled. In the propor
tional flow-sharing system, all control valves are connected
to the same load-sensing pressure. This means that pres
sure unloading in the neutral position is ensured by a con
trolled connection to tank (Q
LS
approx. 0.7 l/min).
2.3.2 LS
max
pressure relief
The LS
max
pressure relief setting at the valve block have to
set below the pressure cut-off setting of the pump. Without
this pressure-relief function, all activated actuators stop
when any actuator reaches its end-position. If this is not a
disadvantage in a system, the LS
max
pressure-relief func
tion in the valve block is not required.
IMPORTANT: the pressure setting at the LS pump have
to be higher than the LS
max
pressure relief by at least the
LS-Δp of the pump (see also section 4.4.4)
2.3.3 3-way pressure compensator
The 3-way pressure compensator keeps the pressure dif
ference between the pressure and control galleries inside
the block at a constant level. The rest flow passes to tank or
to the rest-flow port.
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2.3.4 2-way pressure compensator
In the inlet section, the 2-way pressure compensator is
needed to convert a higher inlet pressure into a lower, con
trolled working pressure.
This circuit is needed when several control blocks, each
with a different working pressure, are incorporated in the
overall system and one of these hydraulic circuits has to be
regulated to a lower pressure level.
If the pressure in the control line reaches the setting of a
pressure relief valve, the pressure compensator shuts off
the supply to the hydraulic circuit. In this way, a constant
pressure level is achieved in the respective hydraulic circuit.
2.3.5 Pressure control in P line
Direct-acting pressure-relief function in the inlet flow in P
line.
2.3.6 2-stage pressure relief (only in conjunc
tion with 3-way pressure compensator)
If the pressure in the control line reaches the setting of an
upstream pressure-relief valve, the 3-way compensator
opens to tank, thus limiting the pressure in the pressure
gallery inside the block.
2.3.7 External priority function, with “Dynamic
Flow” in the LS line
An external actuator always has priority when flow is sup
plied by pump. Only when the external priority is completely
supplied, rest flow will feed the block functions. A defined
oil flow runs through the LS line to the priority actuator. This
has the effect of shortening the priority function's reaction
time.
2.3.8 LS pressure relief in the priority flow
If the pressure in the control line reaches the LS pressure-
relief setting, the flow to the priority actuator is reduced until
the pressure in the LS line equals the setting of the pres
sure-relief valve. The flow that is no longer required is now
available to other actuators.
2.3.9 LS shut-off
In the type LVS-E-CCL... inlet sections for closed-center op
eration (LS pump), an additional LS shut-off is implemented
using a seat-type directional cartridge valve.
This safety shut-off is used to interrupt the LS signal from the
control block to the pump (by connecting the LS signal in
side the block directly to tank).
2.4 Overview inlet sections
2.4.1 Overview of items, with part number
Model code Part number Model code Part number
LVS-E-CF*-G110A00/P1= 100030365 LVS-E-CCL-G110J24A53/P1= 100033188
LVS-E-CAP-G110A00 100027317 LVS-E-CCL-G110J12A48/P=/P1= 100036604
LVS-E-CB*-G110A00 100030496 LVS-E-CCL-G110J24A48/P=/P1= 100033704
LVS-E-CE*-G110A01/P1= 100029646 LVS-E-CF2-G110A00/P1= 100031115
LVS-E-CE*-G110A48/P=P1= 100032849 LVS-E-CF2H-G110A00/P1= 100036559
LVS-E-CE*-B110A42/P=P1= 100032566 LVS-E-CME-G101A54/P2= 100032775
LVS-E-CCL-G110J12A53/P1= 100036603 LVS-E-CGE-G100A00/P2=/P3 100027273
2.4.2 Inlet sections for systems with fixed-displacement pump (Open Center)
Symbol Description Part number
P
R
LSLS
P1
LVS-E-CF*-G110A00/P1= 100030365
3-way compensator
LS
max
pressure relief adjustable, P1 =
Two-stage pressure relief, P1 =
Control Δp = 12 bar
Q
In
up to 200 l/min
Port threads: P and R = G1”
Give the pressure setting P1 in bar with the ordering information
This results in P = P1 (LS
max
) + Δp
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2.4.3 Inlet sections for systems with load-sensing pump (Closed Center)
Symbol Description Part number
P
R
LS
LVS-E-CAP-G110A00 100027317
Q
In
= up to 260 l/min
Port threads: P and R = G 1”, LS = G¼”
P
R
LS
LVS-E-CB*-G110A00 100030496
LS-unloading
Q
In
= up to 260 l/min
Port threads: P and R = G1”, LS = G¼”
P
R
LS
P1
LVS-E-CC*-G110A00/P1= see ordering code
LS
max
pressure relief, fixed setting, P1 = e.g. 210 bar
Choice of LS
max
pressures P1 [bar]:
100, 125, 140, 160, 175, 190, 210, 230, 250, 280, 300
Q
In
= up to 260 l/min
Port threads: P and R = G1”, LS = G¼”
Give the pressure setting P1 in bar with the ordering information
This results in P = P1 (LS
max
) + Δp
LVS CC -- E - G110* A 00
Inlet section
Function: without LS unloading
with LS
max
pressure relief = CC*
Port threads to DIN 3852 - Part 2
Design stage
Option
LS
max
pressure setting P1 [bar]: 100, 125, 140, 160, 175, 190, 210, 230, 250, 280, 300
/
P1=
P
R
LS
P1
LVS-E-CE*-G110A00/P1= see ordering code
LS-unloading
LS
max
pressure relief, fixed setting, P1 = e.g. 210 bar
Selection of LS
max
pressures P1 [bar]:
100, 125, 140, 160, 175, 190, 210, 230, 250, 280, 300
Q
In
= up to 260 l/min
Port threads: P and R = G1”, LS = G¼”
Give the pressure setting P1 in bar with the ordering information
This results in P = P1 (LS
max
) + Δp
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LVS CE -- E - G110* A 00
Inlet section
Function:
with LS unloading with LS
max
pressure relief = CE*
Port threads to DIN 3852 - Part 2
Design stage
Option
LS
max
pressure setting P1 [bar]: 100, 125, 140, 160, 175, 190, 210, 230, 250, 280, 300
/
P1=
P
R
LS
P1
LVS-E-CE*-G110A01/P1= 100029646
LS-unloading
LS
max
pressure relief adjustable, P1 =
Q
In
= up to 260 l/min
Port threads: P and R = G1”,LS = G¼”
Give the pressure setting P1 in bar with the ordering information
This results in P = P1 (LS
max
) + Δp
P
R
LS
P
P1
LVS-E-CE*-G110A48/P=/P1= 100032849
LS-unloading
LS
max
pressure relief adjustable, P1=
Pressure relief can be set in the P inlet, Q = 140 l/min, P =
Q
In
= up to 260 l/min
Port threads: P and R = G1”, LS = G¼”
Give the pressure setting P and P1 in bar with the ordering information
This results in P = P1 (LS
max
) + Δp
P
R
LS
P
P1
LVS-E-CE*-G110A42/P=/P1= 100032566
LS-unloading
LS
max
pressure relief adjustable, P1=
Pressure relief can be set in the P inlet, Q = 60 l/min, P =
Q
In
= up to 260 l/min
Port threads: P and R = G1”, LS = G¼”
Give the pressure setting P and P1 in bar with the ordering information
This results in P = P1 (LS
max
) + Δp
P
R
LS
P1
LVS-E-CCL-G110J12A53/P1= (12 V DC)
LVS-E-CCL-G110J24A53/P1= (24 V DC)
100036603
100033188
Electrical LS-disable via 2/2 seat valve, de-energised open
LS
max
pressure relief adjustable, P1=
Q
In
up to 260 l/min
Port threads: P and R = G1”, LS = G¼”
Give the pressure setting P1 in bar with the ordering information
This results in P = P1 (LS
max
) + Δp
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P
R
LS
MP
P
P1
Note:
Test port for P inlet
LVS-E-CCL-G110J12A48/P=/P1= (12 V DC)
LVS-E-CCL-G110J24A48/P=/P1= (24 V DC)
100036604
100033704
Electrical LS-disable via 2/2 seat valve, de-energised open
LS
max
pressure relief adjustable, P1=
Q
In
up to 260 l/min
Pressure relief can be set in the P inlet, Q = 140 l/min
Port threads: P and R = G1”, LS = G¼”
Give the pressure setting P and P1 in bar with the ordering information
This results in P = P1 (LS
max
) + Δp
P
RLS
P1
LVS-E-CF2-G110A00/P1= 100031115
2-way compensator
LS-unloading
Flow cut-off, adjustable P1 =
Control Δp = 12 bar
Q
In
up to 150 l/min
Port threads: P and R = G1”, LS = G¼”
Give the pressure setting P1 in bar with the ordering information
This results in P = P1 (LS
max
) + Δp
P
RLS
P1
LVS-E-CF2H-G110A00/P1= 100036559
2-way compensator
LS-unloading
Flow cut-off, adjustable P1 =
Control p = 15 bar
Q
In
up to 180 l/min
Port threads: P and R = G1”, LS = G¼”
Give the pressure setting P1 in bar with the ordering information
This results in P = P1 (LS
max
) + Δp
D
LS
P
R
MP
Note:
Test port for P inlet
P2
LVS-E-CME-G101A54/P2= 100032775
Internal priority function
Control p = 9 bar
LS-unloading
LS
max
pressure relief, priority flow, adjustable P2=
Q
In
up to 200 l/min
Rest flow at port D = 200 l/min
Port threads: P and R = G1”, MP and LS = G¼“
Give the pressure setting P2 in bar with the ordering information
This results in P = P2 (LS
max
) + Δp
Description:
The LVS valve sections mounted after the inlet section are given priority sup
ply. The maximum pressure for priority- and surplus-flow is set using P2. The
rest flow is available at port D.
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PL
P
LS
R
LSL
P2
P3
LVS-E-CGE-G100A00/P2=/P3= 100027273
LS-unloading
LS
max
pressure relief, priority flow, adjustable P2 = / P3 =
Control Δp = 9 bar
Q
In
up to 200 l/min
Q
D
up to 80 l/min
Priority flow at port PL
Port threads: P and R = G1”, PL = G½”, LS and LSL = G¼”
Give the pressure settings P2 and P3 in bar with the ordering information
This results in P = P2/3 (LS
max
) + Δp
Description:
The priority function is routed via port PL to a prioritised external actuator and
is load-independent, thanks to the pressure compensator. The maximum pres
sure of the prioritised flow can be limited with the P2 pressure relief function. The
rest flow is available to the LVS directional valves downstream of the inlet sec
tion. The maximum pressure can be set with P3 (must be higher than the priority
pressure P2).
Dynamic LS:
- Application with Orbitrol
At port LSL there is a permanent flow of control oil of about 0.8 l/min. This is
mostly used in systems with a steering function.
If another valve block is connected to PL, there must be no dynamic LS (please
discuss with Bucher Hydraulics).
2.5 Dimensions
2.5.1 LVS-E-CF*-G110A00 (100030365)
135
M10
90
20
66
133
101
185
212,5
43 67,5
15
69
15
G1”
G1”
G1/4”
2.5.2 LVS-E-CAP-G110A00 (100027317)
57
133
32,5
67,5
20
135
90
45
44
M 10
15
15
66
G1”
G3/4”
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2.5.3 LVS-E-CB*-G110A00 (100030496)
90
M10
17
20
66
135
133
44,75
101
67,532,5
15
G1/4”
G1”
G3/4”
2.5.4 LVS-E-CC*-G110A00/P1=
90
M10
17
20
66
135
133
44,75
101
67,532,5
15
G1/4”
G1”
G3/4”
2.5.5 LVS-E-CE*-G110A00/P1=
90
M10
17
135
44,75
101
133
20
66
67,5
32,5
15
G1/4”
G1”
G1”
2.5.6 LVS-E-CE*-G110A01 (100029646)
90
M1 0
17
13549,7
20
66
133
44,75
101
67,5
32,5
15
G1/4”
G1”
G3/4”
90
13549,7
90
13549,7
2.5.7 LVS-E-CE*-G110A48 (100032849)
90
M10
17
13549,7
44,75
101
133
221
20
66
67,532,5
15
G1/4”
206,7
G1”
G1”
2.5.8 LVS-E-CE*-G110A42 (100032566)
44,75
101
66
135
90
17
M10
67,5
32,5
15
133
20
G1”
G1”
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2.5.9 LVS-E-CCL-G110J12A53 (100036603)
LVS-E-CCL-G110J24A53 (100033188)
44,75
101
66
135
90
17
M
10
67,5
32,5
15
133
202,5
20
G1”
G1”
2.5.10 LVS-E-CCL-G110J12A48 (100036604)
LVS-E-CCL-G110J24A48 (100033704)
90
M10
17
135
49,7
206,7
20
66
15
G1/4”
44,75
101
133
221
G1”
G1”
67,5
32,5
2.5.11 LVS-E-CF2-G110A00 (100031115)
LVS-E-CF2H-G110A00 (100036559)
M10
90
13577,5
77,5
31
17
133
20
66
182,7
15
G1/4”
G3/4”
34
2.5.12 LVS-E-CME-G101A54 (100032775)
90
M10
13566
218,3
15
28
133
29
87
73,5
1,5
15
97
143,7
M x1.5
12
G1”
G1”
17
G1/4”
50
2.5.13 LVS-E-CGE-G100A00 (100027273)
M10
90
15
135
66
204
15
97
132
17
53
30
81.5
133
81
181
28.5
50
7.5
17
67.5
G1”
G3/4”
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3 Intermediate sections
3.1 Characteristic curves
3.1.1 Adjustment range of 3-way proportional
pressure-control valve
I [A] = solenoid current
250
30
0
1,90 +10% I [A]12V
0,95 +10% I [A]24V
0,25 0,5 0,75
0,5 1,0 1,5
100
200
150
50
Pressure range 8
290-3600 PSI (20-250 bar)
Pressure range 6
220-2300 PSI (15-160 bar)
This characteristic curve is valid in conjunction with inter
mediate sections that have a 3-way pressure control (LVS-
Z-PDR…).
3.1.2 Control characteristic as a function
of flow rate
250
200
150
50
0
30 10 10 30
p [bar]
40 20 0 20 40 Q [l/min]
100
50 50
P-P
R
P
R
-
T
3.2 Overview of items, with part number
Model code Part number Model code Part number
LVS-Z-CF2-****A00/P1= 100031656 LVS-Z-PDRC6FJ-G1/2A00 100031117
LVS-Z-CME-G3/4A10/P2=/P3= 100035201 LVS-Z-PDRA8FJ-G1/2A00 100029118
3.3 Overview of intermediate sections
Symbol Description Part number
P1
LVS-Z-CF2-****A00/P1= 100031656
2-way compensator for a lower p
max
in the downstream part of the block,
pressure is adjustable
LS-unloading
Control Δp 12 bar
Flow cut-off adjustable P1=
Q
Nom
up to 180 l/min
Give the pressure setting P1 in bar with the ordering information
This results in P = P1 + 12 bar
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P
R
LS
P2 P3
LVS-Z-CME-G3/4A10/P2=/P3= 100035201
Internal priority function
LS-unloading
Control Δp 9 bar
LS
max
pressure relief, priority flow, adjustable P2 =
rest flow, adjustable P3 =
Q
In
up to 180 l/min
Give the pressure setting P2 and P3 in bar with the ordering information
Description: Priority function – the parts of the block downstream of this inter
mediate section are given priority supply. The rest flow supplies the part of the
block upstream of the intermediate section. The maximum pressure of the rest
flow is set with an LS
max
pressure relief function. The maximum pressure of the
prioritised flow can be limited with the P2 pressure relief function. The rest flow
is available to the LVS directional valves downstream of the inlet section. The
maximum pressure can be set with the P3 pressure relief function.
B
PB
LVS-Z-BHR…-G1/2…B1000/P=… see ordering code
Hitch control valve
Selection of actuator flow rates [l/min]: 16, 25, 32, 40, 50, 63, 80, 100
Choice of pressure ranges PB [bar]:
50, 63, 80, 100, 125, 140, 160, 175, 190, 210, 230, 250, 280, 300
Description: Two-stage, proportional, electrohydraulic 3/3 directional valve for
single-acting, leak-free functions. The actuator flow rate is set by the propor
tional, electrohydraulic pilot valve. A throttle valve in the return line enables a
practically load-independent lowering speed. The pressure relief PB protects
the actuators from undue pressure peaks.
LVS BH -- Z - G1/2R B 00
/
PB =
Intermediate section
Function
Actuator flow rate [l/min]:
16, 25, 32, 40, 50, 63, 80, 100 = 016 - 100
Port threads to DIN 3852 - Part 2 B = G½”
Plug type AMP Junior Timer = J Deutsch plug DT04-2P-EP04 = T
Supply voltage 12V DC = 12 24V DC = 24
Design stage
Option
Pressure range PB [bar]: 50, 63, 80, 100, 125, 140, 160, 175, 190, 210, 230, 250, 280, 300
- 10
RP LS
B
LVS-Z-PDRC6FJ-G1/2A00 (12 V DC) 100031117
3-way proportional pressure control of actuators; preferred in applications that
require a supporting or counterbalancing pressure. E.g. ground-guided equip
ment such as snow ploughs, mowers, harvesting systems, .....
3-way pressure reducing valve
Controllable pressure range 15-160 bar
Q
Actuator
= 40 l/min Port thread B = G½“
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RP
LS
B
LVS-Z-PDRA8FJ-G1/2A00 (12 V DC) 100029118
3-way proportional pressure control of actuators; preferred in applications that
require a supporting or counterbalancing pressure. E.g. ground-guided equip
ment such as snow ploughs, mowers, harvesting systems, .....
3-way pressure reducing valve
Controllable pressure range 20-250 bar
Q
Actuator
= 40 l/min Port thread B = G½
3.4 Dimensions
3.4.1 LVS-Z-CF2-****A00 (100031656)
20
73
90
17
M10
13577,5
133
3.4.2 LVS-Z-CME-G3/4A10 (100035201)
66
135
204
27
130
179
26
49.5
57
95
32
67.5
28
G 3/4"
3.4.3 LVS-Z-BHR100-G1/2J12A..
36
65
115
130
278
48
132
176
12 V DC,
AMP Junior Timer
3.4.4 LVS-Z-PDRC6FJ-G1/2A00
(100031117 / 100029118)
135
138.5
165.1
130
220
29
66
31
67.5
12 V DC,
AMP Junior Timer
G 1/2"
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4 Directional valve sections
Directional valve series LVS08 and LVS12 can be freely
combined. Ideally, the LVS12 sections are the first ones af
ter the inlet section, followed by the LVS08 sections.
4.1 General technical data
Description LVS08 LVS12
Control types:
- direct acting ON/OFF solenoid
- direct acting proportional solenoid
- two-stage, proportional, electrohydraulically operated
X
X
-
-
-
X
Nominal flow rate [l/min] 50 180
Maximum inlet pressure [bar] 250 300
1)
Maximum pressure at the actuator ports A and B [bar] 280 320
1)
Possible additional functions:
- separate, proportional flow rates for A and B per valve section
- pressure relief and make-up function
- electrically operated seat valves (integral)
- manual override by pin
- manual override by hand lever
- spool-stroke limiter
- bolt-on plate with seat valves
- bolt-on plate with load-control valves
X
X
X
-
X
X
X
X
-
X
X
X
-
-
1) For higher pressures and flow rates, please enquire.
4.2 Technical data for pressure relief / make-up valve
General characteristics Unit Description, value
Nominal flow rate l/min 60
permissible tolerance = +/- 10% at Q
In
= 3 l/min
4.3 Characteristic curves
4.3.1 Spool in maximum operating position
Measured with spool type O = 180 l/min
Q [l/min] = flow rate P A/B and A/B T
p [bar] = pressure drop P A/B and A/B T
p [bar] / P - A/B
0
7
14
21
28
35
0 50 100 Q [l/min]
150
1 valve section
9 valve sections
4.3.2 Pressure drop with individual operation
Measured with spool type O = 180 l/min
Q [l/min] = flow rate A/B T
p [bar] = pressure drop A/B T
p [bar] A/B - T
0
5
10
15
20
25
0 50 100 150 200 250 300
Q [l/min]
9 valve sections
1 valve section
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4.4 Functions
4.4.1 Directional function
3-way valves have only one actuator port. 4-way valves are
designed for double-acting actuators.
4.4.2 Two independent 3/2 prop. directional
valves
Spool types 6A and 6D are designed to supply 2 motor
drives.
By dividing the control spool 6A, 2 motor drives can be im
plemented in parallel, and independently of one another, in
one valve body.
4.4.3 Load-independent operation
When several valves are operated simultaneously, the
highest actuator pressure is signalled to the 3-way pressure
compensator or to the pump control. The control pressure-
difference of the system pressure control (3-way pressure
compensator, variable-delivery pump) acts directly on the
most highly loaded actuator and ensures load-independent
control. The lower loaded actuators can be made load-inde
pendent by using individual section compensators.
4.4.4 LS-max pressure relief
If no oil flows out from an actuator port although the valve is
in an operated position (e.g. cylinder at end-stop), the P
pressure is signalled in the LS ring circuit behind all com
pensators. The compensators in the individual functions
would now also close due to their spring forces, and all actu
ators would remain stationary.
To prevent this from happening, the LS
max
pressure is lim
ited by a pressure-relief function. The discharge of LS flow
reduces the pressure before the LS ring circuit, which re
sults in the planned p being kept constant. The actuators
in the system now operate without any malfunction.
4.4.5 Pressure compensator function
With the LVS08 valve series, there are two versions of the
pressure compensator. The standard pressure compen
sator can be used in all applications and functions.
There is also a pressure compensator that can be config
ured for improved fine control. To increase the functional
stability, this variant is the preferred choice for oscillation-
critical functions (usually motor functions).
4.4.6 Pressure relief and make-up function
The pressure relief valves protect actuators from unaccept
ably large pressure peaks when the actuator is operated or
when external forces act on the actuator. The make-up
(anti-cavitation) function supplies oil to the actuator when
the tank pressure is higher than the actuator pressure.
4.4.7 Load sensing
By means of the load sensing system, the highest prevailing
actuator pressure is signalled to all proportional flow-shar
ing valves.
4.4.8 Conversion factors
Without changing the spool position, the flow rate at the ac
tuator ports can be changed by altering the LS Δp setting at
the compensator or pump controller. The corresponding
conversion factors are shown in the following table.
Actuator flow rate for each spool is defined at 12 bar.
LS Dp Conversion factor
6 bar 0.7
8 bar 0.8
9 bar 0.86
12 bar (standard) 1.0
15 bar 1.12
16 bar 1.15
18 bar 1.25
20 bar 1.30
4.4.8.1 Example
LS p 18 bar
spool 120 l/min
120 x 1,25 = 150 l/min
= max. flow rate achieved at 18 bar control Δp
4.4.9 Spool types for the directional valve sec
tions
A spool Actuator flow closed to tank in middle
position.
D + J spools Actuator connected to tank in the
middle position
4A + 4D spools For double-acting actuators
3A + 3J spools For single-acting actuators
6A + 6D spools Split spool, for two single-acting actu
ators in one section.
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5 Directional sections LVS08 – with ON/OFF or proportional solenoids
5.1 General technical data
Description Unit ON/OFF solenoid Proportional solenoid
Maximum flow rate l/min 50
Maximum inlet pressure bar 250
Maximum inlet pressure with manual operation bar 250
Maximum pressure at the actuator ports bar 280
Maximum pressure at the actuator ports with manual
operation
bar 280
Spool increments by actuator flow rates at 12 bar Δp l/min 6 (A), 10 (B), 16 (C), 25 (D), 32 (E), 40 (F), 50 (P)
Power consumption and voltage tolerance ± 10%
W 30
max. 30 at 2.5 A / 12 V
max. 30 at 1.25 A / 24 V
Energising current
A
0.8 - 2.5 for 12 V
0.4 - 1.25 for 24 V
Duty cycle % 100% (2.5 A / 12 V or 1.25 A / 24 V)
Protection class AMP Junior Timer: IP65
Deutsch plug DT04: IP67 (DIN EN 60529)
Override pin Φ 6 2
Main characteristics of the seat valves Unit Description, Value
Maximum flow rate l/min 50
Power consumption W 20
Voltage tolerance % +/- 10
Coil resistance Ώ 7.4 for 12 V 28.4 for 24 V
Switching time: opening
closing
msec
50
100
5.2 Characteristic curve
5.2.1 Control characteristic
Valve with proportional solenoid and 12 bar pressure drop
at the orifice.
Q [l/min] = flow rate at the actuator outlet port
I [mA] = current at the proportional solenoids
0
10
20
30
40
50
60
50 l/min (P)
40 l/min (F)
25 l/min (D)
16 l/min (C)
10 l/min (B)
500 700 900 1100 1300 1500 1700 1900 2100 2300 I [mA] 12V
250 350 450 550 650 750 850 950 1050 1150 I [mA] 24V
Q [l/min]
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5.3 LVS08 Standard
5.3.1 Standard version
Port threads for actuator A + B = G½”
Pressure compensator in A and B
Override pin
5.3.2 Freely configurable functions
Flow rate
Spool type in mid-position
Compensator function
Control type (proportional solenoid or ON/OFF)
Plug type
A
B
ba
RP LS
5.3.3 Options menu
Spool type 3A 3J 4A 4D
06 l/min at B (A closed) = *A3J 06 l/min at A and B = AA4A AA4D
10 l/min at B (A closed) = *B3J 10 l/min at A and B = BB4A BB4D
16 l/min at B (A closed) = *C3A *C3J 16 l/min at A and B = CC4A CC4D
25 l/min at B (A closed) = *D3A *D3J 25 l/min at A and B = DD4A DD4D
32 l/min at B (A closed) = *E3J 32 l/min at A and B = EE4A EE4D
40 l/min at B (A closed) = *F3J 40 l/min at A and B = FF4A FF4D
50 l/min at B (A closed) = *P3A *P3J 50 l/min at A and B = PP4A PP4D
Control type
ON/OFF solenoid 12 V = A
ON/OFF solenoid 24 V = B
Proportional solenoid 12V = C
Proportional solenoid 24V = D
Pressure compensator function standard fine control
1)
for actuator B = 4B
for actuator A = 8A
for actuator A + B = 5C
Plug type
AMP Junior Timer = J
Deutsch plug DT04-2P-EP04 = T
1) Fine controlled compensator function for increased stability in the hydraulics systems (see section 4.4.5).
5.3.4 Plug type
AMP Junior Timer
-J..-
Deutsch plug DT04-2P-EP04
-T..-
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5.3.5 Control type
Proportional solenoid
with override pin and
starting point adjustment
(starting point is set by the
factory)
A / B C / D
ON/OFF solenoid
with override pin
5.3.6 Dimensions
48
24
87.5134
119
G ½”
73
19
15
G ½”
AB
PA B P
ON/OFF solenoid = 282
Proportional solenoid = 311
5.3.7 Ordering code
Directional valve section size 08
Spool type
Pressure compensator function
Control type
Plug type
Port threads to DIN 3852 Part 2: actuator ports A + B = G½”
Override pin
Options
Design stage
White fields = data specified by Bucher Hydraulics
Grey fields = data from the overview of sections 5.3.3
LVS A 0008 21 00
C
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5.4 LVS08 Standard with pressure relief / make-up valve
5.4.1 Standard version
Port threads for actuator A + B = G½”
Pressure compensator in actuator A + B
Override pin
Pressure relief and make-up function (pressure setting
selectable)
5.4.2 Freely configurable functions
Flow rate
Spool type in mid-position
Pressure compensator function
Control type (proportional solenoid or ON/OFF)
Plug type
A
B
ba
RP LS
5.4.3 Options menu
Control type
ON/OFF solenoid 12 V = A
ON/OFF solenoid 24 V = B
Proportional solenoid 12V = C
Proportional solenoid 24V = D
Plug type
AMP Junior Timer = J
Deutsch plug DT04-2P-EP04 = T
Pressure relief and make-up function
adjustable 70 - 230 bar = A
adjustable 150 - 380 bar = B
fixed setting (values in bar):
25 = D, 32 = E, 40 = F, 63 = H, 80 = I, 100 = K, 125 = L, 140 = M,
160 = N, 175 = O, 190 = P, 210 = Q, 230 = R, 250 = S, 280 = T
Cavity prepared (closed, no function, prepared for retrofitting anti-shock valves, with plug) = #
Spool type 3A 3J 4A 4D
06 l/min at B (A closed) = *A3J 06 l/min at A and B = AA4A AA4D
10 l/min at B (A closed) = *B3J 10 l/min at A and B = BB4A BB4D
16 l/min at B (A closed) = *C3A *C3J 16 l/min at A and B = CC4A CC4D
25 l/min at B (A closed) = *D3A *D3J 25 l/min at A and B = DD4A DD4D
32 l/min at B (A closed) = *E3J 32 l/min at A and B = EE4A EE4D
40 l/min at B (A closed) = *F3J 40 l/min at A and B = FF4A FF4D
50 l/min at B (A closed) = *P3A *P3J 50 l/min at A and B = PP4A PP4D
Pressure compensator function standard fine control
1)
for actuator B = 4B
for actuator A = 8A
for actuator A + B = 5C
1) = Fine controlled compensator function for increased stability in the hydraulics systems (see section 4.4.5).
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5.4.4 Plug type
AMP Junior Timer
-J..-
Deutsch plug DT04-2P-EP04
-T..-
5.4.5 Control type
Proportional solenoid
with override pin and
starting point adjustment
(starting point is set by the
factory)
A / B C / D
ON/OFF solenoid
with override pin
5.4.6 Dimensions
A
B
PA
PB
134 90.5
48
24
73
119
15
19
G1/2"
G1/2"
ON/OFF solenoid = 290
Proportional solenoid = 315
5.4.7 Ordering code
Directional valve section
size 08
Spool type
Pressure compensator function
for actuator port A + B
Control type
Plug type
Port threads to DIN 3852 Part 2, actuator A and B =G½”
Design stage
Options
Override pin
White fields = data specified by Bucher Hydraulics
Grey fields = data from the overview of sections 5.4.3
For adjustable
valves
Pressure setting
P
A
= ... bar
P
B
= ... bar
LVS A 0008 21 0
0
C
-
Pressure relief/
make-up valve
Actuator A
cavity prepared = #
Actuator B
cavity prepared = #
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5.5 LVS08 Standard, surface for bolt-on valve
5.5.1 Standard version
Prepared for bolt-on plate
Pressure compensator in actuator A + B
Override pin
5.5.2 Freely configurable functions
Flow rate
Spool type in mid-position
Pressure compensator function
Control type (proportional solenoid or ON/OFF)
Plug type
A
B
ba
RP LS
5.5.3 Options menu
Plug type
AMP Junior Timer = J
Deutsch plug DT04-2P-EP04 = T
Control type
ON/OFF solenoid 12 V = A
ON/OFF solenoid 24 V = B
Proportional solenoid 12V = C
Proportional solenoid 24V = D
Spool type 3A 3J 4A 4D
06 l/min at B (A closed) = *A3J 06 l/min at A and B = AA4A AA4D
10 l/min at B (A closed) = *B3J 10 l/min at A and B = BB4A BB4D
16 l/min at B (A closed) = *C3A *C3J 16 l/min at A and B = CC4A CC4D
25 l/min at B (A closed) = *D3A *D3J 25 l/min at A and B = DD4A DD4D
32 l/min at B (A closed) = *E3J 32 l/min at A and B = EE4A EE4D
40 l/min at B (A closed) = *F3J 40 l/min at A and B = FF4A FF4D
50 l/min at B (A closed) = *P3A *P3J 50 l/min at A and B = PP4A PP4D
Pressure compensator function standard fine control
1)
for actuator B = 4B
for actuator A = 8A
for actuator A + B = 5C
1) Fine controlled compensator function for increased stability in the hydraulics systems (see section 4.4.5).
5.5.4 Plug type
AMP Junior Timer
-J..-
Deutsch plug DT04-2P-EP04
-T..-
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5.5.5 Control types
Proportional solenoid
with override pin and
starting point adjustment
(starting point is set by the
factory)
A / B C / D
ON/OFF solenoid
with override pin
5.5.6 Dimensions
48
24
87.5
134
117
1,5 ±0,05
Æ17,8 H11
(-0,11)
Æ17,8 H11
(-0,11)
AB
PA
P
B
ON/OFF solenoid = 290
Proportional solenoid = 311
5.5.7 Ordering code
LVS
Directional valve section size 08
Spool function
Pressure compensator function
Control type
Plug type
Prepared for bolt-on plate
Override pin
Options
Design stage
A 0008 00 00
C
White fields = data specified by Bucher Hydraulics
Grey fields = data from the overview of sections 5.5.3
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5.6 LVS Standard, surface for bolt-on valves, with pressure relief / make up valve
5.6.1 Standard version
Prepared for bolt-on section
Pressure compensator in actuator A and B
Override pin
Pressure relief and make-up function (pressure setting
selectable)
5.6.2 Freely configurable functions
Flow rate
Spool type in mid-position
Pressure compensator function
Control type (proportional solenoid or ON/OFF)
Plug type
A
B
ba
RP LS
5.6.3 Selection menu
Plug type
AMP Junior Timer = J
Deutsch plug DT04-2P-EP04 = T
Pressure relief and make-up function
adjustable 70 - 230 bar = A
adjustable 150 - 380 bar = B
fixed setting (values in bar):
25 = D, 32 = E, 40 = F, 63 = H, 80 = I, 100 = K, 125 = L, 140 = M,
160 = N, 175 = O, 190 = P, 210 = Q, 230 = R, 250 = S, 280 = T
Cavity prepared (closed, no function, prepared for retrofitting anti-shock valves, with plug) = #
Control type
ON/OFF solenoid 12 V = A
ON/OFF solenoid 24 V = B
Proportional solenoid 12V = C
Proportional solenoid 24V = D
Spool type 3A 3J 4A 4D
06 l/min at B (A closed) = *A3J 06 l/min at A and B = AA4A AA4D
10 l/min at B (A closed) = *B3J 10 l/min at A and B = BB4A BB4D
16 l/min at B (A closed) = *C3A *C3J 16 l/min at A and B = CC4A CC4D
25 l/min at B (A closed) = *D3A *D3J 25 l/min at A and B = DD4A DD4D
32 l/min at B (A closed) = *E3J 32 l/min at A and B = EE4A EE4D
40 l/min at B (A closed) = *F3J 40 l/min at A and B = FF4A FF4D
50 l/min at B (A closed) = *P3A *P3J 50 l/min at A and B = PP4A PP4D
Pressure compensator function standard fine control
1)
for actuator B = 4B
for actuator A = 8A
for actuator A + B = 5C
1) Fine controlled compensator function for increased stability in the hydraulics systems (see section 4.4.5).
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5.6.4 Plug type
AMP Junior Timer
-J..-
Deutsch plug DT04-2P-EP04
-T..-
5.6.5 Control type
Proportional solenoid
with override pin and
starting point adjustment
(starting point is set by the
factory)
A / B C / D
ON/OFF solenoid
with override pin
5.6.6 Dimensions
A
B
PA
PB
134 90.5
48
24
73
119
15
19
G1/2"
G1/2"
ON/OFF solenoid = 290
Proportional solenoid = 315
5.6.7 Ordering code
Directional valve section
size 08
Spool type
Pressure compensator function
for actuator A and B
Control type
Plug type
Prepared for bolt-on plate
Design stage
Options
Override pin
White fields = data specified by Bucher Hydraulics
Grey fields = data from the overview of sections 5.6.3
For adjustable
valves
Pressure settings
P
A
= ... bar
P
B
= ... bar
LVS A 0008 00 00
C
Pressure relief /
make-up valve
Actuator A
Cavity prepared = #
Actuator B
Cavity prepared = #
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5.7 LVS08 with integrated double seat valve
5.7.1 Standard version
Port thread for actuator A + B = G½”
Pressure compensator in actuator A + B
Double seat valve, solenoid operated
5.7.2 Freely configurable functions
Flow rate
Spool type in mid-position
Pressure compensator function
Control type (proportional solenoid or ON/OFF)
Plug type
ba
A
B
RP LS
5.7.3 Selection menu
Seat valves, solenoid operated, Q
max
70 l/min, de-energised closed
Double seat valve, solenoid operated, in A + B = J8
Double seat valve, solenoid operated, in A + B with manual override, 'Knob-Style', push-and-turn = J8D
Double seat valve, solenoid operated, in B = J7
2)
Double seat valve, solenoid operated, in B with manual override, 'Knob-Style', push-and-turn = J7D
2)
Control type
ON/OFF solenoid 12 V = A
ON/OFF solenoid 24 V = B
Proportional solenoid 12V = C
Proportional solenoid 24V = D
Plug type
AMP Junior Timer = J
Deutsch plug DT04-2P-EP04 = T
Spool type 3A 3J 4A 4D
06 l/min at B (A closed) = *A3J 06 l/min at A and B = AA4A AA4D
10 l/min at B (A closed) = *B3J 10 l/min at A and B = BB4A BB4D
16 l/min at B (A closed) = *C3A *C3J 16 l/min at A and B = CC4A CC4D
25 l/min at B (A closed) = *D3A *D3J 25 l/min at A and B = DD4A DD4D
32 l/min at B (A closed ) = *E3J 32 l/min at A and B = EE4A EE4D
40 l/min at B (A closed) = *F3J 40 l/min at A and B = FF4A FF4D
50 l/min at B (A closed) = *P3A *P3J 50 l/min at A and B = PP4A PP4D
Pressure compensator function standard fine control
1)
for actuator B = 4B
for actuator A = 8A
for actuator A + B = 5C
1) Fine controlled compensator function for increased stability in the hydraulics systems (see section 4.4.5).
2) Can only be used with spool types 3A and 3J.
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5.7.4 Plug type
AMP Junior Timer
-J..-
Deutsch plug DT04-2P-EP04
-T..-
5.7.5 Control type
Proportional solenoid
with override pin and
starting point adjustment
(starting point is set by the
factory)
A / B C / D
ON/OFF solenoid
with override pin
5.7.6 Dimensions
PA
PB
181
90.5134
48
24
75
119
G1/2"
ON/OFF solenoid = 290
Proportional solenoid = 315
5.7.7 Ordering code
Directional valve section size 08
Spool type
Pressure compensator function for actuator A + B
Control type
Plug type
Port threads to DIN 3852 - Part 2 - actuator ports A + B = G½”
Design stage
Options
Override pin
White fields = data specified by Bucher Hydraulics
Grey fields = data from the overview of sections 5.7 3
LVS A 0008
21 0
0
E
-
Seat valve,
solenoid operated
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5.8 LVS08 with additional manual handlever
5.8.1 Standard version
Port threads for actuator A + B = G½”
Pressure compensator in actuator A + B
Additional manual handlever with override pin P
max
250
bar. With electrical operation, the hand lever remains in
the 0 position (hand lever does not move with the spool).
5.8.2 Freely configurable functions
Flow rate
Spool type in mid-position
Pressure compensator function
Control type (proportional solenoid or ON/OFF)
Plug type
A
B
b
a
RP LS
5.8.3 Options menu
Control type
ON/OFF solenoid 12 V = A
ON/OFF solenoid 24 V = B
Proportional solenoid 12V = C
Proportional solenoid 24V = D
Plug type
AMP Junior Timer = J
Deutsch plug DT04-2P-EP04 = T
Spool type 3A 3J 4A 4D
06 l/min at B (A closed) = *A3J 06 l/min at A and B = AA4A AA4D
10 l/min at B (A closed) = *B3J 10 l/min at A and B = BB4A BB4D
16 l/min at B (A closed) = *C3A *C3J 16 l/min at A and B = CC4A CC4D
25 l/min at B (A closed) = *D3A *D3J 25 l/min at A and B = DD4A DD4D
32 l/min at B (A closed) = *E3J 32 l/min at A and B = EE4A EE4D
40 l/min at B (A closed) = *F3J 40 l/min at A and B = FF4A FF4D
50 l/min at B (A closed) = *P3A *P3J 50 l/min at A and B = PP4A PP4D
Pressure compensator function standard fine control
1)
for actuator B = 4B
for actuator A = 8A
for actuator A + B = 5C
1) Fine controlled compensator function for increased stability in the hydraulics systems (see section 4.4.5).
5.8.4 Plug type
AMP Junior Timer
-J..-
Deutsch plug DT04-2P-EP04
-T..-
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5.8.5 Control type
Proportional solenoid
with override pin and
starting point adjustment
(starting point is set by the
factory)
A / B C / D
ON/OFF solenoid
with override pin
5.8.6 Dimensions
28 28
67
134
80
44 75
48
17.3
A
B
PA
1
G 1/2"
G 1/2"
PB
ON/OFF solenoid = 145
Proportional solenoid = 157,5
ON/OFF solenoid = 221
Proportional solenoid = 233,5
1 Set screws for spool stroke limiting (flow limiting only works with manual operation)
5.8.7 Ordering code
Directional valve section size 08
Spool type
Pressure compensator function
Control type
Plug type
Port threads to DIN 3852 - Part 2 - actuator ports A + B = G½”
Additional manual handlever with override pin
Options
Design stage
White fields = data specified by Bucher Hydraulics
Grey fields = data from the overview of sections 5.8.3
LVS N 0008
21
00
D
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5.9 LVS08 with additional manual handlever and pressure relief / make-up valve
5.9.1 Standard version
Pressure compensator in actuator A + B
Override pin with manual handlever P
max
250 bar
With electrical operation, the hand lever remains in the 0
position (the hand lever does not move with the spool).
Pressure relief – make-up valve / choice of pressure set
tings
5.9.2 Freely configurable functions
Flow rate
Spool type in mid-position
Pressure compensator function
Control type (proportional solenoid or ON/OFF)
Plug type
A
B
b
a
RP LS
5.9.3 Selection menu
Spool type 3A 3J 4A 4D
06 l/min at B (A closed) = *A3J 06 l/min at A and B = AA4A AA4D
10 l/min at B (A closed) = *B3J 10 l/min at A and B = BB4A BB4D
16 l/min at B (A closed) = *C3A *C3J 16 l/min at A and B = CC4A CC4D
25 l/min at B (A closed) = *D3A *D3J 25 l/min at A and B = DD4A DD4D
32 l/min at B (A closed) = *E3J 32 l/min at A and B = EE4A EE4D
40 l/min at B (A closed) = *F3J 40 l/min at A and B = FF4A FF4D
50 l/min at B (A closed) = *P3A *P3J 50 l/min at A and B = PP4A PP4D
Control type
ON/OFF solenoid 12 V = A
ON/OFF solenoid 24 V = B
Proportional solenoid 12V = C
Proportional solenoid 24V = D
Plug type
AMP Junior Timer = J
Deutsch plug DT04-2P-EP04 = T
Pressure compensator function standard fine control
1)
for actuator B = 4B
for actuator A = 8A
for actuator A + B = 5C
Pressure relief and make-up function
adjustable 70 - 230 bar = A
adjustable 150 - 380 bar = B
fixed setting (values in bar):
25 = D, 32 = E, 40 = F, 63 = H, 80 = I, 100 = K, 125 = L, 140 = M,
160 = N, 175 = O, 190 = P, 210 = Q, 230 = R, 250 = S, 280 = T
Cavity prepared (closed, no function, prepared for retrofitting anti-shock valves, with plug) = #
1) Fine controlled compensator function for increased stability in the hydraulics systems (see section 4.4.5).
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5.9.4 Plug type
AMP Junior Timer
-J..-
Deutsch plug DT04-2P-EP04
-T..-
5.9.5 Control type
Proportional solenoid
with override pin and
starting point adjustment
(starting point is set by the
factory)
A / B C / D
ON/OFF solenoid
with override pin
5.9.6 Dimensions
28 28
67
134
80
44 75
48
17.3
A
B
PA
1
G 1/2"
G 1/2"
PB
ON/OFF solenoid = 145
Proportional solenoid = 157,5
ON/OFF solenoid = 221
Proportional solenoid = 233,5
1 Set screws for spool stroke limiting (flow limiting only works with manual operation)
5.9.7 Ordering code
Directional valve section,
size 08
Spool type
Compensator function for actuator A and B
Control type
Plug type
Port threads to DIN 3852 Part 2, actuator ports A + B = G½”
Design stage
Options
White fields = data specified by Bucher Hydraulics
Grey fields = data from the overview of sections 5.9.3
For adjustable
valves:
Pressure setting
P
A
= ... bar
P
B
= ... bar
LVS N 0008 21 0
0
D
-
Pressure relief /
make-up valve
Actuator A
Cavity prepared = #
Actuator B
Cavity prepared = #
Override pin with additional
manual handlever
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6 Bolt-on sections LVS08
6.1 Function
6.1.1 Load-control valve
These bolt-on load control valves, with integrated anti-
shock function, ensure load-independent lowering motion
at speeds determined by the inlet flow, with leak-free shut-
off when the directional valve is in its neutral position. The
anti-shock valve setting should preferably be setted higher
than 1,5 times the highest load pressure. Turning the ad
justing screw in the clockwise direction reduces the setting,
and this can also be used for emergency lowering of the
load.
6.1.2 Seat valves
These seat valves, which can be opened by solenoid or by
hydraulic pressure, shut off the actuator lines with zero leak
age.
6.1.3 Seat valves with pressure relief and
make-up valve
These solenoid-opened seat valves with service line pres
sure relief and make-up valves shut off the actuator lines
with zero leakage and protect the actuator from unaccept
able large pressure peaks.
6.2 Overview of items, with part number
Model code Part number Model code Part number
LVSPRE-ZVAZVB-21-J12-C2000 100040196 LVSPBH-***-S30-21-A00/P= 100029653
LVSPRE-ZVAZVB-21-J24-C2000 100040200 LVSPRH-DVADVB-21-***-A00 100037249
LVSPBH-S30-S30-21-A00/P= 100031107 LVSPRH-DVA***-21-***-A00 100037896
6.3 Overview bolt-on sections
Symbol Description Part number
B
A
LVSPRE-ZVAZVB-21-J12-C2000
LVSPRE-ZVAZVB-21-J24-C2000
100040196
100040200
Bolt-on section with double seat valve. These solenoid-opened seat valves
shut off the actuator lines with zero leakage.
Q
max
= 50 l/min
Port threads G½”
A
B
LVSPRH-DVADVB-21-***-A00 100037249
Bolt-on section with double seat valve. These solenoid-opened seat valves
shut off the actuator lines with zero leakage.
Q
max
= 50 l/min
Port threads G½”
A
B
LVSPRH-DVA***-21-***-A00 100037896
Bolt-on section with double seat valve. These solenoid-opened seat valves
shut off the actuator lines with zero leakage.
Q
max
= 50 l/min
Port threads G½”
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A
B
LVSPBH-S30-S30-21-A00/P= 100031107
These bolt-on load control valves, with integral anti-shock function, ensure
load-independent lowering motion at speeds determined by the inlet flow, with
leak-free shut-off when the directional valve is in its neutral position.
Load-holding valve in actuator ports A and B
Pressure setting of anti-shock valves PA and PB is adjustable (specify when
ordering)
Q
max
= 50 l/min
Pilot ratio of the load-holding valves = 3:1
Port threads G½”
A
B
LVSPBH-***-S30-21-A00/P= 100029653
These bolt-on load control valves, with integral anti-shock function, ensure
load-independent lowering motion at speeds determined by the inlet flow, with
leak-free shut-off when the directional valve is in its neutral position.
Load-holding valve in actuator port B, adjustable pressure
Q
max
= 50 l/min
Port threads G½”
A
B
LVSPEC-230-230-21-J24-C02 see ordering code
These solenoid-opened seat valves with service line pressure relief and make-
up valves shut off the actuator lines with zero leakage and protect the actuator
from unacceptably large pressure peaks.
Actuator ports A and B virtually leak-free
Pressure relief in actuator ports A and B
Choice of pressure relief settings for A + B:
100, 125, 140, 160, 175, 190, 210, 230, 250, 280, 300 bar
Q
max
up to 50 l/min
Port threads G½”
LVS
-
21
Bolt-on valve with pressure-relief
Actuator port A:
Pressure-relief - pressure setting [bar]
100, 125, 140, 160, 175, 190, 210, 230, 250, 280, 300
Actuator port B:
Pressure-relief - pressure setting [bar]
100, 125, 140, 160, 175, 190, 210, 230, 250, 280, 300
Port threads to DIN 3852 - Part 2 / actuator A+B = G½“
Plug type and nominal voltage: AMP Junior Timer 24 V DC = J24
Design stage
Seat valves, solenoid opened: Double seat valves in actuator ports A + B
PEC
---
J
24
-
C 02
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6.4 Dimensions
6.4.1 LVSPRE-ZVAZVB-21-J12-C00 (100040196)
LVSPRE-ZVAZVB-21-J24-C00 (100040200)
G1/2"
G1/2"
28
28
47
110
170
47
23.5
6.4.2 LVSPBH-S30-S30-21-A00 (100031107)
18
18
130
83
114,45
23,5
47
G1/2”
G1/2”
6.4.3 LVSPBH-***-S30-21-A00 (100029653)
23,5
47
18
G1/2”
83
114,5
18
G1/2”
6.4.4 LVSPEC-230-230-21-J24-C02
G1/2"
G1/2"
28
172
318
47
82
23.5
6.4.5 LVSPRH-DVADVB-21-***-A00 (100037249)
LVSPRH-DVA***-21-***-A00 (100037896)
65
126
45
22.5
35
91
G1/2"
G1/2"
63
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7 Directional valve sections LVS12 – electrohydraulic, two-stage
7.1 General technical data
General characteristics Unit Value
Maximum flow rate l/min 180
Maximum inlet pressure bar 300
1)
Maximum pressure at the actuator ports bar 320
1)
Spool increments by actuator flow rates at 12 bar Δp
l/min
16(C), 25(D), 40(F), 50(P), 63(G), 80(H), 100(K),
125(L), 150(M), 180(O)
Nominal voltage V DC 12 or 24
Power consumption W max. 18 (at 1.5 A + 12 V or 0.75 A + 24 V)
Energising current
A
0.6 … 1.5 with 12 V
0.3 … 0.75 with 24 V
Duty cycle % 100
Protection class AMP: IP65
Deutsch plug DT04-2P-EP04: IP67
(DIN EN 60529)
1) For higher pressures and flow rates, please enquire.
Technical data pressure relief valve Unit Value
Limit current
A
1.6 with 12 V
0.8 with 24 V
Coil resistance
Ώ
5.3 with 12 V
21.2 with 24 V
PWM frequency (dither) Hz 100
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7.2 Characteristic curve
Proportional, electrohydraulically operated valve with 12 bar pressure drop at the orifice
Q [l/min] = flow rate at the actuator outlet port
I [mA] = current at the solenoids
0
20
40
60
80
100
120
140
160
180
500 600 700 800 900 1000 1100 1200 1300
250 300 350 400 450 500 550 600 650
I [mA] 12V
I [mA] 24V
Q [l/min]
1350
675
1
2
3
4
5
6
8
9
7
1 Spool type C (16 l/min)
2 Spool type D (25 l/min)
3 Spool type F (40 l/min)
4 Spool type G (63 l/min)
5 Spool type H (80 l/min)
6 Spool type K (100 l/min)
7 Spool type L (125 l/min)
8 Spool type M (150 l/min)
9 Spool type O (180 l/min)
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7.3 LVS12 Standard
7.3.1 Standard version
Port threads for actuator A + B = G¾”
Pressure compensator in A + B
7.3.2 Freely configurable functions
Flow rate
Spool type in mid-position
Plug type
Manual override
Spool stroke-limiter feature (can be factory-setted)
Only with spool types 3A, 4A and 4D
A
B
ba
RP LS
7.3.3 Selection menu
Spool type
Compensator function
for actuator A B. A+B A+B A+B A+B
B closed A closed
16 l/min = *C3JB = CC4AC = CC4DC = CC6DC
25 l/min = *D3JB = DD4AC = DD4DC = DD6AC = DD6DC
32 l/min = *E3JB = EE4AC = EE4DC = EE6AC = EE6DC
40 l/min = *F3JB = FF4AC = FF4DC = FF6AC = FF6DC
50 l/min = *P3JB = PP4AC = PP4DC = PP6AC = PP6DC
63 l/min = *G3JB = GG4AC = GG4DC = GG6AC = GG6DC
80 l/min = *H3JB = HH4AC = HH4DC = HH6AC = HH6DC
100 l/min = *K3JB = KK4AC = KK4DC = KK6AC = KK6DC
125 l/min = *L3JB = LL4AC = LL4DC = LL6DC
150 l/min = *M3JB = MM4AC = MM4DC = MM6DC
180 l/min = O*3AA = *O3JB = OO4AC = OO4DC = OO6DC
Manual override by pin / spool-stroke limiter
Manual override = A
Manual override and spool-stroke limiter = C
1)
Control type
Electrohydraulic, two stage, 12 V = F
Electrohydraulic, two stage, 24 V = G
Plug type
AMP Junior Timer = J
Deutsch plug DT04-2P-EP04 = T
3A
3J
4A 4D
6A
6D
1) Spool stroke limiting is not possible with split spools (spool selection 3J, 6A, 6D).
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7.3.4 Plug type
AMP Junior Timer
-J..-
Deutsch plug DT04-2P-EP04
-T..-
7.3.5 Dimensions
48
24
130
50
230
119
150.5
G3/4”
28 28
65
AB
PA
PB
52
119
150.5
28
65
B
Spool type 3J, 6A and 6D
PB
7.3.6 Ordering code
Directional valve section, size 12
Spool type and pressure compensator
Control type
Plug type
Port threads for actuators A + B = G¾”
Override pin and spool-stroke limiter
Options
Design stage:
for spool type 3A, 4A, 4D = B
for spool type 3J, 6A, 6D = D
White fields = data specified by Bucher Hydraulics
Grey fields = data from the overview of sections 7.3.3
LVS 1012
22
0
0
D
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7.4 LVS12 with pressure relief /make-up valves
7.4.1 Standard functions
Port thread for actuator A + B = G¾”
Pressure compensator in A + B
Pressure relief/make-up valve (selectable pressure set
ting)
7.4.2 Free configurable functions
Flow rate
Spool type in mid-position
Plug type
Manual override
Spool stroke-limiter feature (can be factory-setted)
Only with spool types 3A, 4A and 4D
A
B
ba
RP LS
7.4.3 Selection menu
Spool type
Compensator function
for actuator: A B. A+B A+B A+B A+B
B closed A closed
16 l/min = *C3JB = CC4AC = CC4DC = CC6DC
25 l/min = *D3JB = DD4AC = DD4DC = DD6AC = DD6DC
32 l/min = *E3JB = EE4AC = EE4DC = EE6AC = EE6DC
40 l/min = *F3JB = FF4AC = FF4DC = FF6AC = FF6DC
50 l/min = *P3JB = PP4AC = PP4DC = PP6AC = PP6DC
63 l/min = *G3JB = GG4AC = GG4DC = GG6AC = GG6DC
80 l/min = *H3JB = HH4AC = HH4DC = HH6AC = HH6DC
100 l/min = *K3JB = KK4AC = KK4DC = KK6AC = KK6DC
125 l/min = *L3JB = LL4AC = LL4DC = LL6DC
150 l/min = *M3JB = MM4AC = MM4DC = MM6DC
180 l/min = O*3AA = *O3JB = OO4AC = OO4DC = OO6DC
Manual override by pin / spool-stroke limiter
Manual override = A
Manual override and spool-stroke limiter = C
Cavity prepared = #
Pressure relief and make-up function
adjustable 70 - 230 bar = A
adjustable 150 - 380 bar = B
fixed setting (values in bar):
25 = D, 32 = E, 40 = F, 63 = H, 80 = I, 100 = K, 125 = L, 140 = M, 160 = N, 175 = O,
190 = P, 210 = Q, 230 = R, 250 = S, 280 = T, 300 = U, 330 = V
Cavity prepared (closed, no function, prepared for retrofitting anti-shock valves, with plug) = #
3A
3J
4A 4D 6A 6D
Control type
Electrohydraulic, two stage 12 V = F
Electrohydraulic, two stage 24 V = G
Plug type
AMP Junior Timer = J
Deutsch plug DT04-2P-EP04 = T
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7.4.4 Plug type
AMP Junior Timer
-J..-
Deutsch plug DT04-2P-EP04
-T..-
7.4.5 Dimensions
48
24
130
50
230
119
150.5
G3/4”
28 28
65
AB
PA
PB
52
119
150.5
28
65
B
Spool types 3J, 6A and 6D
7.4.6 Ordering code
Directional valve section
size 12
Spool type with pressure compensator
Control type
Plug type
Port thread for actuator A + B = G¾”
Override pin and spool-stroke limiter
Options
Design stage
for spool type 3A, 4A, 4D = B
for spool type 3J, 6A, 6D = D
Pressure relief / make-up valve
Actuator A
Cavity prepared = #
Actuator B
Cavity prepared = #
For adjustable
valves:
Pressure setting
P
A
= ... bar
P
B
= ... bar
White fields = data specified by Bucher Hydraulics
Grey fields = data from the overview of sections 7.4.3
LVS 1012 22 00
B
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7.5 LVS12 with additional manual handlever
7.5.1 Standard version
Pressure compensator in A + B
Port thread actuator A and B = G¾”
Additional manual handlever
Spool-stroke limiter
7.5.2 Freely configurable functions
Flow rate
Spool function
Plug type
Spool stroke-limiter feature (can be factory-setted)
RP
LS Y
A
B
ba
7.5.3 Selection menu
Spool type
Pressure compensator function
for actuator: A+B A+B
16 l/min = CC4AC = CC4DC
25 l/min = DD4AC = DD4DC
40 l/min = FF4AC = FF4DC
50 l/min = PP4AC = PP4DC
63 l/min = GG4AC = GG4DC
80 l/min = HH4AC = HH4DC
100 l/min = KK4AC = KK4DC
125 l/min = LL4AC = LL4DC
150 l/min = MM4AC = MM4DC
180 l/min = OO4AC = OO4DC
Control type
Electrohydraulic, two stage 12 V = F
Electrohydraulic, two stage 24 V = G
Plug type
AMP Junior Timer = J
Deutsch plug DT04-2P-EP04 = T
Additional function
Additional manual handlever,
Spool stroke limiter = H
4A 4D
7.5.4 Plug type
AMP Junior Timer
-J..-
Deutsch plug DT04-2P-EP04
-T..-
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7.5.5 Dimensions
44 73
119
28 28
87.3 87.3
126 160
162
298
19.5
48
G3/4"
AB
A
B
22°
22°
7.5.6 Ordering code
Directional valve section size 12
Spool type and pressure compensator
Control type
Plug type
Port thread for actuator A + B = G¾”
Additional manual operation, override pin, spool-stroke limiter
Options
Design stage
White fields = data specified by Bucher Hydraulics
Grey fields = data from the overview of sections 7.5.3
LVS H 1012 22 00
B
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7.6 LVS12 with additional manual operation, pressure relief / make-up valve
7.6.1 Standard functions
Port threads G¾”
Pressure compensator in A +B
Pressure relief / make-up function (pressure settings are
selectable)
Additional manual handlever and spool-stroke limiter
7.6.2 Freely configurable functions
Flow rate
Spool type in mid-position
Plug type
b
a
B
A
7.6.3 Selection menu
Spool type
Pressure compensator function
for actuator: A+B A+B
16 l/min = CC4AC = CC4DC
25 l/min = DD4AC = DD4DC
40 l/min = FF4AC = FF4DC
50 l/min = PP4AC = PP4DC
63 l/min = GG4AC = GG4DC
80 l/min = HH4AC = HH4DC
100 l/min = KK4AC = KK4DC
125 l/min = LL4AC = LL4DC
150 l/min = MM4AC = MM4DC
180 l/min = OO4AC = OO4DC
Control type
Electrohydraulic, two stage 12 V = F
Electrohydraulic, two stage 24 V = G
Plug type
AMP Junior Timer = J
Deutsch plug DT04-2P-EP04 = T
Pressure relief / make-up function
adjustable 70-230 bar = A
adjustable, 150 - 380 bar = B
fixed setting (values in bar):
25 = D, 32 = E, 40 = F, 63 = H, 80 = I, 100 = K, 125 = L, 140 = M,
160 = N, 175 = O, 190 = P, 210 = Q, 230 = R, 250 = S, 280 = T, 300 = U
Cavity prepared (closed, no function, prepared for retrofitting anti-shock valves, with plug) = #
4A
4D
Additional function
Additional manual handlever,
Spool stroke limiter = H
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7.6.4 Plug type
AMP Junior Timer
-J..-
Deutsch plug DT04-2P-EP04
-T..-
7.6.5 Dimensions
44 73
119
28 28
87.3 87.3
126 160
162
298
19.5
48
G3/4"
AB
A
B
22°
22°
7.6.6 Ordering code
Directional valve
section size 12
Spool type with
pressure compensator function
Control type
Plug type
Port thread for actuator A + B = G¾”
Additional manual operation, manual override by pin,
spool-stroke limiter
Options
Design stage
Pressure relief / make-up function:
Actuator A
Cavity prepared = #
Actuator B
Cavity prepared = #
White fields = data specified by Bucher Hydraulics
Grey fields = data from the overview of sections 7.6.3
For adjustable
valves:
Pressure setting
P
A
= ... bar
P
B
= ... bar
LVS H 1012
22 0
0
B
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8 End sections
8.1 Overview of items, with part number
Model code Part number Model code Part number
LVS-A-CA*-****A00 100027983 LVS-A-CA*-G1/2A07 100026845
LVS-A-CA*-G110A10 100030024
8.2 Overview of end sections
Symbol Description Part number
LVS-A-CA*-****A00 100027983
No function
RP LSMP
LVS-A-CA*-G110A10 100030024
No function
Ports: P, R = G1“ LS, MP = G¼“
MR MP MLS
LVS-A-CA*-G1/2A07 100026845
No function
Test ports; MP, MLS = G¼” MR = G½”
8.3 Dimensions
8.3.1 LVS-A-CA*-****A00 (100027983)
90
16
32
133
135
M10
15
124
8.3.2 LVS-A-CA*-G1/2A07 (100026845)
83,5
M10
20
133
44,75
97
65
34,5
90
130
3,5
G1/4”
G1/2”
G1/4”
3,5
32
8.3.3 LVS-A-CA*-G110A10 (100030024)
90
M
10
15
133
46
99
55,524
135
3,5
156
16
81
66
81
36
G1/4”
G1/4”
G1”
G1”
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9 Configuration of control blocks
9.1 Ordering example
Criteria Ordering code and data Part number
General:
Power supply = 24 V DC
Plug type = AMP Junior Timer
Inlet section:
Pump type = fixed-displacement pump
Inlet flow = 140 l/min
P
max
= 230 bar
3-way pressure compensator function
LVS-E-CF*-G110A00/P1 = 230 bar
Port threads: A + B = ¾”
Q
In
up to 200 l/min, Δp = 12 bar,
LS
max
setting = 218 bar (P
max
- Δp)
100030365
1st. Directional valve section:
Actuator = 1 motor drive, reversible
Inlet flow = 100 l/min
LVS12KK4DCGJ22A1000B
Port threads: P + R = 1“
Q
In
up to 200 l/min, Δp = 12 bar,
LS
max
setting = 218 bar (P
max
- Δp)
Defined by
factory
2nd. Directional valve section:
Actuators: 2 motor drives, non-reversible
Q motor 1 = 100 l/min, Q motor 2 = 40 l/min
P
max
at actuator B = 100 bar
LVS12KK4DCGJ22A1000B-#K Defined by
factory
3rd. Directional valve section:
Actuator = double-acting cylinder
Q at A and B = 25 l/min
P
max
at A = 100 bar, at B = 160 bar
ON/OFF operation
LVS08DD4A5BJ21A1000C-KN Defined by
factory
End section
No control function
LVS-A-CA*-****A00 100027983
Tie rods
Screw-in depth 15 mm, plus 3 directional sections =
3 x 48 mm, plus thickness of end section 32 mm, plus
projection of 15 mm = 206 mm, rounded up to the next
10 mm size = 210 mm
3x tie rods 212 mm
9.2 Assembly kit
To assemble the individual valve sections with assured
functional reliability, 3 tie rods and hex. nuts are necessary.
Maximum tightening torque 30 Nm
Tighten in steps of 6, 16 and 30 Nm.
9.2.1 Ordering code
3x tie rod M10 x ...... (required length in mm)
3x hex. nut M10, Part No.: 100243580
3248
15
48 48
15
Calculating the tie rod length:
15 mm + (48 mm x no. of directional valve sec
tions) + width of the end section + 15 mm
Example:
15 + (48 x 3) + 32 +15 = 206 mm
For ordering purposes, always round up the
calculated tie rod length to the next 10 mm.
In our example, we therefore need to order
3x tie rod M10 x 210 mm.
IMPORTANT: maximum 10 directional sections in one valve block
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9.2.2 Pipe fitting and orifices
Model code Description
Part number:
100116329
- Pipe fitting G¼” with thread for inserting up to 2x M5 orifices
(TN3001, Form B)
Application note: for fitting in the LS-line to improve system stability
- Orifice : Ø 0.5 = 100219282
Ø 0.6 = 100209791
Ø 0.8 = 100216052
Ø 1.0 = 100225419
10 Fluid
The control blocks require fluid with a minimum cleanliness
level of ISO 4406 code 20/18/15.
We recommend the use of fluids that contains anti-wear ad
ditives for mixed-friction operating conditions. Fluids with
out appropriate additives can reduce the service life of
valves.
The user is responsible for maintaining and regularly check
ing the fluid quality.
11 Liability
In the design and operation of hydraulic systems, all as
pects of the potential failure modes and all planned opera
tional conditions and uses of the equipment have to take
into consideration.
Concerning risk assessment, please refer to the relevant
Standards. The use of components that are not Original
Bucher Replacement Parts and Accessories nullifies all
warranty.
12 Note
This catalogue is intended for users with specialist knowl
edge. The user must check the suitability of the equipment
described here in order to ensure that all of the conditions
necessary for the safety and proper functioning of the sys
tem are fulfilled. If you have any doubts or questions con
cerning the use of these pumps, please consult Bucher Hy
draulics.
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2020 by Bucher Hydraulics GmbH, D-79771 Klettgau
www.bucherhydraulics.cominfo.kl@bucherhydraulics.com
All rights reserved.
Data is provided for the purpose of product description only, and must not be construed as warranted characteristics in the legal sense. The
information does not relieve users from the duty of conducting their own evaluations and tests. Because the products are subject to continual
improvement, we reserve the right to amend the product specifications contained in this catalogue.
Classification: 430.300.330.