Revised 11/98 539
Proportional Directional and Throttle
Valves – Solenoid Operated
KDG4V-3S and KTG4V-3S standard performance series
K(A)DG4V-3 and K(A)TG4V-3 high performance series
ISO 4401-03 (NFPA D03) – Pressures to 350 bar (5075 psi)
Vickers
®
Proportional Valves
2
Introduction
KDG and KTG Valves
Vickers KDG and KTG valves are
non-feedback type proportional valves.
The KDG is a proportional directional valve
with two solenoids (C models). It
incorporates control of flow, direction,
acceleration, and deceleration in a single
control valve.
The KTG is a proportional throttle valve
with a single solenoid. B models are spring
centered with solenoid A removed. F
models are spring offset to port A and
respond to an increasing signal by
reducing the flow rate. The KTG’s spool
can be infinitely positioned to achieve
throttling (restriction) of the fluid flow.
The primary function of these valves is to
direct and meter fluid flow in proportion to
current received by the solenoid. This fluid
flow controls the velocity, direction, and
acceleration
or deceleration of a work cylinder
or fluid motor.
These valves are designed to fill the
performance gap between conventional
solenoid operated directional valves and
servo valves or feedback-type proportional
valves. They provide control of spool
position and metered fluid flow in
applications that don’t require the high
levels of accuracy, repeatability, or
response possible with feedback-type
proportional valves or servos.
Used with Vickers electronic amplifiers,
these valves provide an interface between
control system intelligence and hydraulic
muscle. This is a very practical way to
control actuator direction and speed while
eliminating shock caused by rapid
acceleration and deceleration of machine
loads.
In addition to improving machine
performance and life, these proportional
valves substantially simplify system design
by combining direction and flow control
capabilities in one package that mounts to
a standard NFPA/ISO subplate or manifold
interface.
The valve can also be readily tailored to a
vast array of applications by specifying the
specific valve configuration which best meets
system requirements.
The valve is controlled by applying current
to either solenoid A or solenoid B. This
current produces a force at the solenoid
push pin which, in turn, causes spool
travel. The spool will continue its motion
until the solenoid force is balanced by the
return spring force. Therefore, spool travel
is proportional to the amount of current
passing through the solenoid coil.
KADG and KATG Valves
The above description of KDG and KTG
valves also applies to KADG and KATG
valves, with one exception. “KA” valves
have an integral amplifier, whereas KDG
and KTG valves do not.
The control amplifier of KA models is
housed in a sturdy metal enclosure built
directly on, and prewired to, the valve.
Factory-set adjustments of gain, balancing
deadband and dither ensure high
repeatability valve-to-valve. The only
electrical inputs required are power
supply (24V) and a voltage command
signal of 10V.
Features and Benefits
These global products, manufactured to
world-class quality standards, are sold and
serviced throughout the world.
KDG4V and KTG4V valves have a low
installed cost due to commonality of parts
with Vickers DG4V-3(S) solenoid
operated directional valve.
These valves open up expanded
application opportunities as a
cost-effective alternative to
feedback-type proportional and
servo valves.
Sustained high machine productivity and
uptime result from the proven fatigue life
and endurance of reliable KDG4V and
KTG4V valves.
Vickers flexible design approach provides
optimum performance. A wide variety of
matching electronic amplifiers, valve
options, and spool ratings allows the
system designer flexibility in meeting
application requirements.
All valves are NFPA fatigue rated at 350
bar (5075 psi) for improved reliability and
performance.
The fully encapsulated solenoid coils are
impervious to common industrial fluids.
Coils can be removed and replaced
quickly and easily without breaking into
the hydraulic envelope.
The valves’ standard ISO 4401-03
mounting is interchangeable with any
NFPA D03 or CETOP 3 interface.
The engineering resin junction box is
NEMA 4 rated for resistance to water and
all commonly used industrial fluids.
Advantages of KADG and KATG valves
with integral amplifier:
Factory-sealed adjustments for increased
valve-to-valve accuracy and simplified
system set-up Valve and amplfier
selected, ordered, delivered and installed
as a performance-tested package
Installation wiring reduced and simplified
Simplified valve removal and replacement
The use of Viton* O-rings throughout
provides multi-fluid capability and
prevents outside fluids from contacting
internal valve parts.
* Viton is a registered trademark of the
DuPont Co.
3
Contents
General Information
Typical Applications, Meter-in and Meter-out, Valve Spool Position, Flow Rates, Recommended Fluids,
Pressure Compensation, Accessories, Electrical Signals, Electrical Connectors 4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cross Section of Typical Valve, Graphical Symbols 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System Calculations for Valve Selection 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
KDG4V-3S and KTG4V-3S Standard Performance Valves – 100 bar (1450 psi) tank line rating
Model Code 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Application Data
Specifications, Performance, Solenoid Specifications, Step Response Time
Spool, Spool/Spring, Metering, Amplifiers, Drain 8
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flow Paths 9
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flow Gain Curves 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Capacity Envelopes 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Frequency Response 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation Dimensions 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EN-427 Feature 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Connections 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
K(A)DG4V-3 and K(A)TG4V-3 High Performance Valves – 210 bar (3000 psi) tank line rating
Model Code 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Application Data
Specifications, Performance, Solenoid Specifications, Step Input Time, Amplifiers, Drain 19
. . . . . . . . . . . . . . . . . . . . . . . . . .
Flow Paths 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flow Gain Curves 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Capacity Envelopes 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Frequency Response 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Block Diagram for KADG4V-3 and KATG4V-3 28
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connection Arrangements for KADG4V-3 and and KATG4V-3 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation Dimensions 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mounting Requirements
32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluid Cleanliness 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
General Information
Typical Applications
This type of valve is often used in both
mobile and industrial “line-of-sight”
applications where speed and position are
controlled by an operator. Some examples
are aerial work platforms, entertainment
industry rides, farm combine controls,
material handling equipment, and process
controls. Any application using a
DG4V-3(S) 60-design solenoid operated
directional valve is a potential application
for the KDG4V-3(S) or KTG4V-3(S)
The standard performance KDG4V-3S or
KTG4V-3S should be used on most
applications where a tank line pressure
rating of 100 bar (1450 psi) is
acceptable. The high performance
KDG4V-3 or KTG4V-3 should be used on
applications where a tank line pressure
rating of 210 bar (3000 psi) is required.
Commonly used electrical input devices
include joystick controllers, proportional
push buttons, potentiometers, power plugs,
and amplifier cards. Input devices that
operate on the principle of direct voltage
rather than current control will require the
appropriate coil type (GP or HA).
Meter-in and Meter-out
System requirements must be clearly
understood and taken into consideration
when selecting a valve spool. Meter-out
spools have the metering notches
positioned between the actuator port and
the tank port, creating a throttle in the
hydraulic actuator’s return line. Meter-out is
the most common spool configuration and
is typically used in applications with over
center loads and/or requiring deceleration
control.
Meter-in spools have the metering notches
positioned between the pressure port and
the actuator port, creating a throttle in the
hydraulic actuator’s inlet line. Meter-in
spools are commonly used with hydrostat
modules for pressure compensation in
applications that don’t have an overrunning
load as well as in load sensing pump
circuits.
Spools with both meter-in and meter-out
flow characteristics should be specified in
applications where load changes (resistive
to overrunning or vice versa) will occur.
They should also be selected when
uncertain system dynamics prevent the
selection of specific meter-in or meter-out
spool types.
Valve Spool Position
Spring centered and spring offset valves
will be spring positioned unless the
solenoid is energized continuously.
NOTE
Due to silting, any sliding spool valve
held shifted under pressure for long
periods may stick and not spring return.
It is recommended that such valves be
cycled periodically to prevent this from
occurring.
Flow Rates
The rate of flow through a proportional
valve is dependent on spool position and
valve pressure differential. This is similar to
flow through a needle valve. Like a needle
valve, as a proportional valve is opened,
the rate of flow increases, and if the
pressure differential across the valve
changes (because of load pressure
changes, for example), the flow will vary.
Because of this phenomenon, “rated flow”
is an arbitrary term, dependent on the
above parameters.
Unlike a needle valve, however,
proportional valves exhibit an inherent
degree of load compensation whereby
increasing valve pressure drop has
progressively less effect on flow rate (see
Power Capacity Envelopes on pages 13
and 26). To eliminate the effects of
pressure changes, a hydrostat module can
be installed under the proportional valve to
achieve pressure compensation.
Recommended Fluids
Petroleum oils are recommended for use
with the KDG4V and KTG4V. Fluorocarbon
seals are standard and are suitable for use
with phosphate ester type fluids or blends,
water glycol, water-in-oil emulsion fluids,
and petroleum oils. Refer to publication
694 for fluid and temperature
recommendations. HWBF (95% water) is
not recommended.
Pressure Compensation
For information on using a SystemStak
reducing valve to achieve pressure
compensation control, please contact your
Vickers Representative.
Accessories
See page 32 for information onmounting
surface, subplate, and bolt kits.
Electrical Signals
It is important to note that solenoid force
and valve flow are proportional to
current—not voltage. Therefore, for
optimum performance, a constant current
electrical signal should be used. This type
of signal will help compensate for the drift
that would otherwise occur when current
flow causes solenoid temperature and
resistance to increase.
Flow is metered directly in proportion to the
command signal applied to the amplifier.
Metering performance is enhanced by
machined metering notches on the valve
spool. As the spool travels from its
centered position, these metering notches
create an increasingly greater orifice area,
allowing more fluid to pass.
Electrical Connectors
KDG4V-3S and KTG4V-3S
On FT (flying lead) models, electrical
connections to the valve are made in the
wiring housing, and a ground terminal is
provided. SP1 and SP2 models have
spade type terminals on each solenoid.
DIN 43650 connectors are also available
by specifying the U coil type. When U1 is
specified, DIN 443650 mating plugs are
included.
KDG4V-3 and KTG4V-3
DIN 43650 connectors are standard.
Mating plugs must be ordered separately.
5
KTG4V-3S-2B**N KTG4V-3S-2F**N KTG4V-3S-33B**A
KDG4V-3(S)-2C**N
KDG4V-3S-33C**AKDG4V-3(S)-2C**S
b
AB
PT
b
AB
PT
b
AB
PT
b
AB
PT
a
b
AB
PT
a
b
AB
PT
a
Cross Section of Typical Valve (KTG4V-3S)
Graphical Symbols
KTG4V
KDG4V
Solenoid B Port A Port B
Note: On all models, when solenoid a" is energized, flow is always P" to A".
When solenoid b" is energized, flow is always P" to B". This is in accordance
with the ANSI-B93.9 standard. Solenoid designations a" and b" are identified
on the diagram plate on the side of the valve.
KDG4V-3-33C**N
b
AB
PT
a
KTG4V-3-2B
AB
PT
KTG4V-3-33B
AB
PT
6
System Calculations for Valve Selection
The “rated flow” values for this range of
proportional valves are determined with a
looped flow path pressure drop (e.g.
P→A→B→T) of 10 bar (145 psi) when the
valve is fully open. As explained on page
4, however, “rated flow” is an arbitrary
term dependent upon
external factors.
It is important to properly size a
proportional valve to achieve good
resolution. A common mistake in specifying
proportional valves is selecting too high a
rated flow. The result may be poor control
of the actuator, particularly with respect to
velocity and resolution. The ideal valve
size is usually one that provides just
enough maximum flow to achieve the
required actuator velocity.
The following steps can be used to
determine the proper size for a proportional
valve. This procedure applies to a
conventional four-way valve controlling an
equal area piston driving a load in an
application in which velocity is the critical
parameter. For differential area cylinders,
base the calculations on the maximum
cylinder flow rate.
Constants
A = Actuator piston area, cm
2
(in
2
)
F
M
= Maximum force required, N (lbf)
F
D
= Force required to accelerate and
maintain velocity, N (lbf)
P
S
= Supply pressure less other
system pressure drops, bar (psi)
P
L
= Maximum pressure required to
drive or accelerate actuator under
dynamic conditions, bar (psi)
P
V
= Allowable valve pressure drop,
bar (psi)
V = Desired actuator velocity,
m/s (in/s)
Q = Flow required to drive actuator at
desired velocity, L/min (USgpm)
1. Determine required actuator area:
A(cm
2
) +
F
M
(N)
10 P
S
(bar)
ƪ
A(in
2
) +
F
M
(lbf)
P
S
(psi)
ƫ
2. Determine flow required to drive
actuator at desired velocity:
Q(Lńmin) + 6 A(cm
2
) V(mńs)
ƪ
Q(USgpm) +
A(in
2
) V(inńs)
3.85
ƫ
3. Determine maximum load pressure
drop under dynamic conditions:
P
L
(bar) +
F
D
(N)
10 A(cm
2
)
ƪ
P
L
(psi) +
F
D
(lbf)
A(in
2
)
ƫ
4. Determine valve pressure drop:
P
V
(bar) + P
S
(bar) * P
L
(bar)
ƪ
P
V
(psi) + P
S
(psi) * P
L
(psi)
ƫ
5. Refer to Flow Gain Curves starting on
page 10 and determine most suitable
valve spool based on flow (Q) and
pressure drop (P
V
).
6. Refer to Power Capacity Envelopes on
page 13 and verify that flow (Q)
determined in step 2 at the valve
pressure drop (P
V
) determined in step
4 falls within (to the left of) the power
curve for the spool selected in step 5.
Example
A hydraulic system consisting of a
pressure compensated pump, proportional
valve, and equal area cylinder must
develop a maximum force of 6400 N (1440
lbf) and move a 200 N (45 lbf) load at a
velocity of 0,25 m/s (9.84 in/s).The force
required to maintain this velocity is 1000 N
(225 lb), and the pump’s compensator is
set at 60 bar (870 psi).
1. Determine required actuator area:
A +
F
M
10 P
S
+
6400
10 60
+ 10,7 cm
2
ƪ
A +
F
M
P
S
+
1440
870
+ 1.66 in
2*
ƫ
* 2 inch bore, 1.375 inch rod cylinder
has actuator area = 1.66 in
2
2. Determine flow required to drive
actuator at desired velocity:
Q + 6 A V
+ 6 10,7 0,25 + 16,1 Lńmin
+
1.66 9.84
3.85
+ 4.24 USgpm
ƫ
ƪ
Q +
A V
3.85
3. Determine maximum load pressure
drop under dynamic conditions:
P
L
+
F
D
10 A
ƪ
P
L
+
F
D
A
+
225
1.66
+ 136 psi
ƫ
+
1000
10 10, 7
+ 9, 4 bar
4. Determine valve pressure drop:
ƪ
P
V
+ P
S
* P
L
P
V
+ P
S
* P
L
+ 60 * 9, 4 + 50, 6 bar
+ 800 * 136 + 734 psi
]
5. Refer to Flow Gain Curves and
determine most suitable valve spool
based on flow (Q) and pressure drop
(P
V
):
Calculated flow (Q) is 16,1 L/min (4.24
USgpm), and valve pressure drop (P
V
) is
50,6 bar (734 psi). Reference to the
KDG4V-3S “Flow Gain” graphs (see page
10) shows that the 15N spool (meter-in and
meter-out) will do the job. A
KDG4V–3S–2C15N would be selected.
7
Model Code – K*G4V-3S Standard Performance Valves
Valve type
K – Proportional
Valve function
D – Directional valve (Double solenoid,
C models. See item 9.)
T – Throttle valve (Single solenoid, B
and F models. See item 9.)
Mounting
G – Subplate/manifold mounted
Operation
4 – Solenoid operated
Pressure rating
V – 350 bar (5075 psi) on P, A, and
B ports
Interface
3 – ISO 4401-03, CETOP 3 (NFPA D03)
Performance
S – Standard performance
Spool type (center condition)
2 – Closed center (all ports)
33 – P port closed, bleed A and B to T
Spool/spring arrangement
B – Spring centered, solenoid A
removed
C – Spring centered, dual solenoid
F – Spring offset to A port, shift to center
3 4 5 876 9 101 2 11 12 13 14 15 16 17 18 19 20
3
4
5
6
7
Spool flow rating
For looped flow path P→A→B→T or
P→B→A→T: ∆p=10 bar (145 psid).
For single flow path P→A or B→T:
∆p= 5 bar (72 psi).
08 – 8 L/min (2 USgpm)
15 – 15 L/min (4 USgpm)
19 – 19 L/min (5 USgpm)
22 – 22 L/min (5.8 USgpm) – available
with KDG4V-3S-33C22A only
Metering condition
S – Meter out only
A – Meter in only
N – Meter in and meter out
Manual override
P2– Plain override in both ends of
single solenoid models
H – Waterproof override in solenoid
ends only
Blank – Plain override in solenoid
ends only
Solenoid energization identity
V – Solenoid identification determined
by position of solenoid (solenoid A on
A port end, solenoid B on B port end)
Blank – Standard per ANSI B93.9
(energize solenoid A, flow
is (P→A)
Flag symbol
M – Electrical options and features
Coil type
F – Flying lead and wiring box
U – DIN 43650 connector
SP1 – Single 6,3 mm spade IEC-760
(direct DC only)
SP2 – Dual 6,3 mm spade IEC-760
21 22 23
8
9
11
12
13
14
15
1
2
16
Electrical connections
T – Wiring terminal block
PA3 – 3-pin conduit connector
PA5 – 5-pin conduit connector
Wiring housing thread
W –
1
/
2
” NPT
J – 20 mm
Electrical options
1 – ISO 4400 with DIN 43650 plug
supplied (U coil type models only)
Coil voltage rating
G – 12V DC*
H – 24V DC*
GP – Direct 12V DC or EM-VP/VT
amplifier
HA – Direct 24V DC or EM-VP/VT
amplifier
* Amplified models, current controlled
Tank pressure rating
5 – 100 bar (1450 psi) for
Design number
Subject to change.
Special modifications
EN-427 – Applies to KTG4V only. One
spool designation only and preset
adjuster; see page 16.
Note: This valve is recommended for use
with Vickers Valvistor control valve.
17
18
19
20
21
22
23
Build
L – Left-hand build (single
solenoid only)
Blank – Standard right-hand build
10
Note: See table on page 8 for available
combinations of spools, spool/spring
arrangements, and metering conditions.
8
KDG4V-3S and KTG4V-3S Application Data
Maximum current @ 50C (122 F)
ambient
G 3.2A
H 1.6A
Power Consumption @ 20C (68F)
G 18 Watts
H 18 Watts
GP 30 Watts
HA 30 Watts
Coil Resistance @ 20C (68 F)
G 1.8 Ohms
H 7.3 Ohms
GP 4.9 Ohms
HA 19.6 Ohms
Coil Inductance @ 1000 Hz
G 7.5 mH
H 29 mH
GP 16 mH
HA 67 mH
The following response times were
measured from the point of
energization/de-energization to the
point of first indication of inlet
pressure change.
Response up to full system pressure is
dependent on the system’s
compressed volume and can vary with
each application.
0–100% (center to full spool travel)
100 msec
100–0% (full spool travel to center –
fast drop out)
15 msec
10–90% (10% full flow to 90% full flow)
100 msec
90–10% (90% full flow to 10% full flow)
25 msec
100–100% (100% full flow travel in
one direction to 100 % full flow travel
in the reverse direction)
80 msec
Step Response Time
Drain
On 2-way valves, “T” is the drain and
must be connected to the tank through
a surge-free line, so there will be no
back pressure at this port.
Solenoid Specifications
Specifications
Maximum operating pressure
(A, B and P ports)
350 bar (5000 psi)
(See “Flow Gain Curves”)
Maximum tank line pressure (T port)
K*G4V-3S:100 bar (1450 psi)
Maximum recommended pressure
drop (four–way models at max. flow)
210 bar (3000psi)*
*At pressure drops above 10 bar (145
psid) dither amplitudes in the electronic
controller may need to be set at or near
minimum to eliminate potential high
frequency circuit noise.
Mounting pattern
ISO–4401–AB–03–4–A, NFPA D03,
CETOP 3
Operating temp 20 to 82C. . .
(–4 to 180F)
Fluid viscosity 16 – 54 cSt. . .
(75–250 SUS)
Weights (approximate)
KDG4V–3S–*–60 2,3 kg (5.06 lbs.). .
KTG4V–3S–*–60 1,75 kg (3.85 lbs.). .
Performance
Frequency Response
18Hz @ –3db
(10Hz @ 45 degree phase lag)
For an amplitude of 25% max stroke
(center to offset) about the 50% position
and DP (P–A–B–T) = 10 bar (145 psid).
See graph on page 14.
Hysteresis
With pulse width modulation: 4%
With direct DC voltage
(GP & HA): 8%
Repeatability: 1%
Deadband : 15–35%
of full solenoid input. Vickers electronic
controllers have a deadband eliminator
to reduce this value to near zero.
Spool, Spool/Spring,
Metering
Refer to the table below for the
available spools, spool/spring
arrangements and metering conditions.
For example, if a KD valve with a “33”
spool is required, the spool/spring
arrangement is “C” and the metering
condition available is “A”. Refer to
“Model Code” for a definition of
these codes.
Model Spool
Spool/Spring
Arrangement
Metering
Condition
C
C
KD
KT
N
A
EEA–PAM–523–A–32
EEA–PAM–523–B–32
EEA–PAM–523–C–32
EEA–PAM–523–D–32
EEA–PAM–523–E–32
EEA–PAM–523–F–3
2
Amplifiers
Plug Amplifier
EHH–AMP–702–C–20
EHH–AMP–702–D–20
EHH–AMP–702–E–20
EHH–AMP–702–F–20
Amplifier
Coil Voltage
Identification
Letter
GP
HA
H
EEA–PAM–520–A–14
(for use with EN427
models)
G EHH–AMP–712–D/G–20
Refer to drawing I-521575 for information.
EM–VT–12–10
EM–VP–12–10
EM–VT–24–10
EM–VP–24–10
H
H
B or F
B
2
33
2
33
N or S
A
9
KDG4V-3S and KTG4V-3S Flow Paths
Valve/Flow Path Spool Symbol
2C08S
2C15S
2C19S
AB
PT
KDG4V-3S with Looped Flow Path.
P→A or B, plus B or A→T
2C08N
2C15N
2C19N
AB
PT
33C08A
33C15A
33C22A
AB
PT
KDG4V-3S with Single Flow Path.
P→A or B, or A or B→T
2C08N
2C15N
2C19N
AB
PT
KTG4V-3S with Single Flow Path.
P→A or B, or A or B→T
2B08N
2B15N
2B19N
AB
PT
KTG4V-3S with Parallel Flow Path.
P→B and A→T
2B08N
2B15N
2B19N
AB
PT
KTG4V-3S with Looped Flow Path.
P→A or B, plus B or A→T
2B08N
2B15N
2B19N
AB
PT
10
KDG4V-3S Flow Gain Curves
40
36
32
28
24
20
16
12
8
4
40
36
32
28
24
20
16
12
8
4
Flow rate Flow rate
Flow rate
Flow rate
Flow rate
Flow rate
Spool 2C15N" P-A or B, or A or B-T
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
Command signal (% of max signal)
0 10 20 30 40 50 60 70 80 90 100
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
40
36
32
28
24
20
16
12
8
4
Command signal (% of max signal)
0 10 20 30 40 50 60 70 80 90 100
Spool 2C08N" P-A or B, or A or B-T
100 bar (1450 psi)
10 bar (145 psi)
l/minUSgpm
l/minUSgpm
Spool 2C19N" P-A or B, or A or B-T
Command signal (% of max signal)
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
40
36
32
28
24
20
16
12
8
4
0 10 20 30 40 50 60 70 80 90 100
l/minUSgpm
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
.5
20
18
16
14
12
10
8
6
4
2
Spool 2C08S" P-A or B plus B or A-T
Command signal (% of max signal)
0 10 20 30 40 50 60 70 80 90 100
USgpm l/min
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
Spool 2C15S" P-A or B plus B or A-T
Command signal (% of max signal)
0 10 20 30 40 50 60 70 80 90 100
l/minUSgpm
Looped Flow Path
At the stated valve pressure drops, the percentage command signals are applicable to whichever solenoid is energized.
100 bar (1450 psi)
30 bar (435 psi)
10 bar (145 psi)
30 bar (435 psi)
30 bar (435 psi)
0
0
0
0
0
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
40
36
32
28
24
20
16
12
8
4
Spool 2C19S" P-A or B plus B or A-T
Command signal (% of max signal)
0 10 20 30 40 50 60 70 80 90 100
USgpm l/min
30 bar (435 psi)
10 bar (145 psi)
100 bar (1450 psi)
0
Looped Flow Path
100 bar (1450 psi)
30 bar (435 psi)
10 bar (145 psi)
30 bar (435 psi)
10 bar (145 psi)
10 bar (145 psi)
11
20
18
16
14
12
10
8
6
4
2
Flow rate
Flow rate
Flow rate
Flow rate Flow rateFlow rate
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
40
36
32
28
24
20
16
12
8
4
Spool 33C22A" P-A or B plus B or A-T
Command signal (% of max signal)
0 10 20 30 40 50 60 70 80 90 100
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
.5
Spool 33C08A" P-A or B plus B or A-T
Command signal (% of max signal)
0 10 20 30 40 50 60 70 80 90 100
l/minUSgpm
USgpm l/min
At the stated valve pressure drops, the percentage command signals are applicable to whichever solenoid is energized.
30 bar (435 psi)
10 bar (145 psi)
100 bar (1450 psi)
30 bar (435 psi)
10 bar (145 psi)
100 bar (1450 psi)
20
18
16
14
12
10
8
6
4
2
Spool 33C15A" P-A or B plus B or A-T
Command signal (% of max signal)
100 bar (1450 psi)
10 bar (145 psi)
0 10 20 30 40 50 60 70 80 90 100
30 bar (435 psi)
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
.5
USgpm l/min
22
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
40
36
32
28
24
20
16
12
8
4
Spool 2C19N" P- B or A-T
Command signal (% of max signal)
0 10 20 30 40 50 60 70 80 90 100
USgpm l/min
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
.5
20
18
16
14
12
10
8
6
4
2
Spool 2C08N" P-B or A-T
Command signal (% of max signal)
0 10 20 30 40 50 60 70 80 90 100
50 bar (725 psi)
USgpm l/min
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
40
36
32
28
24
20
16
12
8
4
Spool 2C15N" P-B or A-T
Command signal (% of max signal)
0 10 20 30 40 50 60 70 80 90 100
USgpm l/min
30 bar (435 psi)
5 bar (72.5 psi)
50 bar (725 psi) and
30 bar (435 psi)
5 bar (72.5 psi)
Looped Flow Path Single Flow Path
50 bar (725 psi)
30 bar (435 psi)
5 bar (72.5 psi)
12
KDG4V-3S Flow Gain Curves
40
36
32
28
24
20
16
12
8
4
40
36
32
28
24
20
16
12
8
4
Flow rateFlow rateFlow rate
Flow rate
Flow rate
Flow rate
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
40
36
32
28
24
20
16
12
8
4
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
40
36
32
28
24
20
16
12
8
4
Spool 2B08N" A-T and B-P
Command signal (% of max signal)
0 10 20 30 40 50 60 70 80 90 100
Spool 2B19N" A-T and B-P
Command signal (% of max signal)
0 10 20 30 40 50 60 70 80 90 100
Spool 2B15N" A-T and B-P
Command signal (% of max signal)
0 10 20 30 40 50 60 70 80 90 100
USgpm l/min
USgpm l/min
USgpm l/min
Spool 2B15N" P-B or A-T
Spool 2B19N" P-B or A-T
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
40
36
32
28
24
20
16
12
8
4
Command signal (% of max signal)
0 10 20 30 40 50 60 70 80 90 100
Command signal (% of max signal)
0 10 20 30 40 50 60 70 80 90 100
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
40
36
32
28
24
20
16
12
8
4
Command signal (% of max signal)
0 10 20 30 40 50 60 70 80 90 100
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
Spool 2B08N" P-B or A-T
USgpm l/min
l/minUSgpm
USgpm l/min
50 bar (725 psi)
5 bar (72.5 psi)
50 bar (725 psi)
Parallel Flow Path
At the stated valve pressure drops, the percentage command signals are applicable to whichever solenoid is energized.
Single Flow Path
30 bar (435 psi)
30 bar (435 psi)
50 bar (725 psi)
5 bar (72.5 psi)
30 bar (435 psi)
50 bar (725 psi)
5 bar (72.5 psi)
30 bar (435 psi)
50 bar (725 psi)
30 bar (435 psi)
5 bar (72.5 psi)
50 bar (725 psi)
30 bar (435 psi)
5 bar (72.5 psi)
0
0
0
0
0
0
13
KDG4V-3S and KTG4V-3S Power Capacity Envelopes
2B15N"
2B19N"
2B08N"
bar
210
bar
210
200
180
160
140
120
100
80
60
40
20
2C15N"
Flow rate Looped Flow Path P-A or B, plus B or A-T
2C15S"
2C08N"
33C08A"
Valve pressure drop
Valve pressure drop
Valve pressure drop
Valve pressure drop
Valve pressure drop
Flow rate Looped Flow Path P-A or B, plus B or A-T
l/min. 0 4 8 12 16 20 24 28 32 36 40
44
200
180
160
140
120
100
80
60
40
20
2800
2400
2000
1800
1200
800
400
psi
3000
l/min. 0 4 8 12 16 20 24 28 32 36 40 44
200
180
160
140
120
100
80
60
40
20
bar
210
2800
2400
2000
1800
1200
800
400
psi
3000
2800
2400
2000
1800
1200
800
400
psi
3000
l/min. 0 4 8 12 16 20 24 28 32 36
40
200
180
160
140
120
100
80
60
40
20
2800
2400
2000
1800
1200
800
400
psi
3000
bar
210
Flow rate Looped Flow Path P-A or B, plus B or A-T
Flow rate Parallel Flow Path P-B and A-T
2B15N"
2B08N"
2B19N"
33C22A"
33C15A"
2C19N"
l/min. 0 4 8 12 16 20 24 28 32 36 40
200
180
160
140
120
100
80
60
40
20
2800
2400
2000
1800
1200
800
400
psi
3000
Flow rate Looped Flow Path P-A or B, plus B or A-T
2C08S"
2C19S"
KTG4VĆ3S
USgpm
KDG4VĆ3S
USgpm
l/min. 0 4 8 12 16 20 24 28 32 36 40
bar
210
USgpm
USgpm
USgpm
USgpm
l/min. 0 6 12 18 24 30 36 42 48 54 60 66
Valve pressure drop
200
180
160
140
120
100
80
60
40
20
bar
210
2800
2400
2000
1800
1200
800
400
psi
3000
Flow rate Single Flow Path P-A or B, or A or B-T
2B15N"
2B08N"
2B19N"
04123 5 789106
04123 5 789106
04123 5 789106
04123 5 78910611
04123 5 78910611
12 16042810614
14
KDG4V-3S and KTG4V-3S Frequency Response
For amplitude of "25% maximum stroke
(center to offset) about 50% position and
p (P→A→B→T)=10 bar (145 psi).
12345678
10
20 30 40 50
–9
–6
–3
0
135°
90°
45°
0°
AMPLITUDE – dB
PHASE LAG – degrees
FREQUENCY RESPONSE – Hz
15
KDG4V-3S and KTG4V-3S Installation Dimensions
25,75
(1.014)
KDG4V-3S and KTG4V-3S with Junction Box
Dimensions in mm (inches)
3rd angle
projection
Two lead wires per
solenoid with M3 size
terminals for customer
connections
23,00
(0.906)
26,25
(1.033)
“F” and “B” models only
“F” and “B” models with “P2” options
24.60
(0.96)
3,0
(0.12)
66,75
(2.828)
130,07
(5.121)
219,63
(8.647)
Thread connection
“W” – NPT
“J” – M20 × 1.5-8H
68,65
(2.703)
91,15
(3.589)
21,75
(0.86)
44,65
(1.758)
46,00
(1.811)
49,25
(1.939)
KDG4V-3S (shown) and KTG4V-3S with DIN Connectors
Dimensions in mm (inches).
Plug connector can be positioned in 90°
increments on valve by removing connector
housing and re-assembling contact holder at
desired orientation inside housing.
Seal
51 (2.01)
27
(1.06)
22,5
(0.88)
∅
M3 thread
5,5
(0.22)
1,5
(0.06)
30,5
(1.20)
26,5 (1.04)
27,5
(1.08)
18
(0.71)
Coil types: U (shown),
SP1, and SP2
(see Model Code)
219,63 (8.647)
78.90
(3.10)
51,90
(2.044)
33,00
(1.299)
Conductor cross-sectional area:
0,5 to 1,5 mm
2
(0.0008 to 0.0023 in
2
)
Cable diameter:
6 to10 mm (0.24 to 0.40 in)
Water-resistant Manual
Override on Solenoid
K*G4V-3S-**(L)-H-(V)M-**-**-60
Dimensions in mm (inches)
Use where finger operation is required.
(Standard manual overrides cannot be
operated without using small tool.)
This “H” feature is not field-convertible
from other models. Please specify with
order.
Spacer
15
(0.6)
Overall length of valve with
standard manual overrides
Manual actuation must be
applied within this diameter.
Spacer prevents actuation by
larger device.
Approx. ∅ 20 (0.75)
DIN 43650 plug connector can be ordered
separately or included with valve by
specifying 1 for Model Code item 19.
Means of connection: screw terminals
Center of mounting
hole to center
of female
connector
16
KTG4V-3S with EN427 Feature
bar
210
KTG4V-3S-2B 08N-(V)M-*** *** *(1)-H5-60-EN427
Flow rate
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
.5
20
18
16
14
12
10
8
6
4
2
Current - Amps
0 .2 .4 .6 .8 1.0 1.2 1.4 1.6
USgpm l/min.
70 bar (1015 psi)
5 bar (73 psi)
0
Valve pressure drop
l/min. 0 4 8 12 16 20 24 28 32 36 40
200
180
160
140
120
100
80
60
40
20
2800
2400
2000
1800
1200
800
400
psi
3000
USgpm 0 1 2 3 4 5 6 7 8 9 10
Flow Gain Curve Power Capacity Curve
This valve feature is recommended
for use as a pilot valve with the
Valvistor Slip-in Cartridge Valve.
The spool adjuster is preset at the
factory. Do not adjust. Improper
operation will result.
Spool adjuster (Factory set.
Do not adjust)
189,27 (7.45)
EN427 Performance
P
A
B
T
17
KDG4V-3S and KTG4V-3S Electrical Connections
Terminal Strip for FT (Flying Lead) Models
Dimensions in mm (inches)
Terminal strip (part number
890345) clips to cover and can be
field-fitted
M3 x 0,5-6H screws
(part number 186006) 2 each end
4 terminal screws M3 x 0,5-6H
(part number 02-113355)
Connections to solenoid A
(or B, according to model type)**
Connections to solenoid B
(or A, according to model type)**
Rubber
gasket
* Difference in dimensions helps ensure
correct orientation of nameplate to valve.
** For DC coils, positive + lead(s) must be
connected to terminal(s) marked +. When
using 3-wire incoming leads to double
solenoid valves (i.e. common neutral),
inner pair of terminals must be
interconnected.
Conduit box cover and
nameplate complete with
sealing gasket and 4 screws
Anti-rotation tab ensures
correct orientation of
cover to junction box
28,50*
(1.12)
30,00*
(1.18)
4
1
2
3
5
4
1
2
3
5
1
2
3
25,4
(1.00)
hex
25,4
(1.00)
hex
25,4
(1.00)
hex
NFPA Connector (Standard T.3.5.29-1980) for FPA3 and FPA5 Models
Dimensions in mm (inches)
The receptacle is a standard three-pole
or five-pole electrical connector with
shortened leads and terminals added.
The five-pole plug has four leads 101,6
(4.0) long and one lead 177,8 (7.0) long.
All wires have non-solder insulated
eyelet terminals. The green wire is used
for the ground connection (No. 8 screw
furnished). Valves are supplied
pre-wired.
68,65
(2.703)
15,2
(0.60)
3 – lead
to solenoid
1 – green lead (ground)
2 – lead to solenoid
4 – lead capped
1 – lead to solenoid
3 – green lead (ground)
5 – lead to solenoid
2 – lead capped
4 – lead to
solenoid A
1 – lead to solenoid B
3 – green lead (ground)
5 – lead to
solenoid B
2 – lead to solenoid A
0.875-16UN-2
A thd.
B models
F models
B models
F models
C models
WARNING
Electrical power must be disconnected
before removing or replacing this
receptacle.
Electrical connection is over solenoid A on
single solenoid models and over solenoid
B on dual solenoid models. See diagram
plate for solenoid B location.
Receptacle is pre-wired to solenoid
eyelets. Connection is made with No. 6
screws and nuts insulated with black
electrical tape.
D
18
Model Code – K(A)*G4V-3 High Performance Valves
Warning: To conform to the EC Electromagnetic Compatibility directive
(EMC), this KADG4V or KATG4V valve must be fitted with a metal 7-pin
plug. The screen of the cable must be securely connected to the shell of
the metal connector. A suitable IP67 rated connector is available from Vickers, part
no. 934939. Alternatively, a non IP67 rated connector is available from ITT-Cannon,
part no. CA 02 COM-E 14S A7 P.
Additionally, the cable must be fitted with a ferrite EMC suppression core not more
than 4cm from the connector referred to above. Suitable types include Farnell
535-898 or Farnell 535-904 which snap-fit over the cable. The plastic plug, part no.
694534, is only suitable for use in a sealed electromagnetic environment or outside
of the European Community
Spool flow rating
For looped flow path P→A→B→T or
P→B→A→T: ∆p= 10 bar (145 psi).
For single flow path P→A or B→T:
∆p= 5 bar (72 psi).
Symmetric Spools
03F – 3 l/min (0.8 USgpm)
07N – 7 l/min (1.8 USgpm)
13N – 13 l/min (3.4 USgpm)
20N – 20 l/min (5.3 USgpm)
28S – 28 l/min (7.4 USgpm) – available
with type 2 spool only
Asymmetric Spool – KDG4V Only
First figure (20N) is flow rating P→A or
A→T; last figure (N10) is flow rating P→B
or B→T.
20N10 – 20 l/min (5.3 USgpm) “A” port
flow, and 10 l/min (2.65 USgpm)
“B” port flow
Manual override(s)
H – Water-resistant
Z – No override(s)
Blank – Plain override(s)
Solenoid energization identity
V – Solenoid identification determined
by position of solenoid (solenoid A on
A port end, solenoid B on B port end)
Blank – Standard per ANSI B93.9
(energize solenoid A, flow
is (P→A)
Flag symbol
M – Electrical options and features
Coil type
U – DIN 43650 connector. Order
solenoid plug separately; see
page 30.
F – Flying lead solenoids (KA type
valves only)
Electrical connection
(KA valves only)
PD7 – 7-pin connector with plastic plug.
See warning note below.
Coil voltage rating
G – 12V DC
H – 24V DC
GP – Direct 12V DC or EM-VP/VT
amplifier
HA – Direct 24V DC or EM-VP/VT
amplifier
KA type valves must have H type coils.
Tank pressure rating
7 – 210 bar (3000 psi)
Design number
Subject to change.
17
Valve type
K – Proportional
KA– Proportional with integral amplifier
Valve function
D – Directional valve (Double solenoid,
C models. See item 8.)
T – Throttle valve (Single solenoid, B
models. See item 8.)
Mounting
G – Subplate/manifold mounted
Operation
4 – Solenoid operated
Pressure rating
V – 350 bar (5075 psi) on P, A, and B
ports
Interface
3 – ISO 4401-03, CETOP 3 (NFPA D03)
Spool type (center condition)
2 – Closed center (all ports)
33 – P port closed, bleed A and B to T
Spool/spring arrangement
B – Spring centered, solenoid A
removed – KTG4V-3
C – Spring centered, dual solenoid –
KDG4V-3
3 4 5 6 9 101 2 11
12 13 14 15 16
3
4
5
6
7
8
9
10
13
14
15
1
2
16
7 8
U
11
7
17
12
19
K(A)DG4V-3 and K(A)TG4V-3 Application Data
Operating temp 20 to 82C. . .
(–4 to 180F)
Fluid viscosity 16 – 54 cSt. . .
(75–250 SUS)
Weights (approximate)
KDG4V–3–*–60 2,4 kg (5.30 lbs.). . .
KTG4V–3–*–60 1,7 kg (3.75 lbs.). . .
KADG4V–3–*–60 2,8 kg (6.20 lbs.). .
KATG4V–3–*–60 2,1 kg (4.65 lbs.). .
Required Time to reach 90% . . . . . .
step: of req’d step:. . . . . . . . .
0 to 100% 25 ms. . . . .
100% to 0 30 ms. . . . .
+90 to –90% 35 ms. . .
Step Input Response
Drain
On 2-way valves, “T” is the drain and
must be connected to the tank through
a surge-free line, so there will be no
back pressure at this port.
Solenoid Specifications
Maximum current @ 50C (122 F)
ambient
G 3.5A
H 1.6A
GP 3.0A
HA 0.94A
Coil Resistance @ 20C (68 F)
G 1.55 Ohms
H 7.3 Ohms
GP 2.0 Ohms
HA 22.1 Ohms
Coil Inductance @ 1000 Hz
G4 mH
H 20 mH
GP 6 mH
HA 55 mH
Relative duty factor
Continuous rating ED = 100%
Type of protection, with electrical
plugs fitted correctly
IEC 144 Class IP65
Maximum operating pressure
(A, B and P ports)
350 bar (5000 psi)
(See “Flow Gain Curves”)
Maximum tank line pressure (T port)
210 bar (3000 psi)
Maximum recommended pressure
drop (four–way models at max. flow)
210 bar (3000 psi)*
*At pressure drops above 10 bar (145
psid) dither amplitudes in the electronic
controller may need to be set at or
near minimum to eliminate potential
high frequency circuit noise.
Specifications
Frequency Response
See graph on page 14.
Performance
Hysteresis
At p = 5 bar (72 psi) t8% at. . . . . .
rated flow
Reproducibility, valve-to-valve
Optimized by adjustment of deadband
compensation, gain and ramp
potentiometers on associated Vickers
amplifier.
EEA–PAM–523–A–30
EEA–PAM–523–B–30
EEA–PAM–523–C–30
EEA–PAM–523–D–30
EEA–PAM–523–E–30
EEA–PAM–523–F–30
Amplifiers
Plug Amplifier
EHH–AMP–702–C–10
EHH–AMP–702–D–10
EHH–AMP–702–E–10
EHH–AMP–702–F–10
Amplifier
Coil Voltage
Identification
Letter
GP
HA
H
G EHH–AMP–712–D/G–20
Refer to drawing I-521575 for information.
EM–VT–12–10
EM–VP–12–10
EM–VT–24–10
EM–VP–24–10
H
l/min
Spool
Code
in
3
/min
coef
**C03F
**C07F
**C13F
**C20F
**C28S
0,2
0,4
0,6
1,0
1,4
12
24
36
60
85
Minimum recommended flow rates
for K(A)DG4V-3
Mounting pattern
ISO–4401–AB–03–4–A, NFPA D03,
CETOP 3
At p = 5 bar (72 psi) per metering path.
20
KADG4V-3 and KATG4V-3 Application Data
KAD/TG4V-3 Valves with Integral Amplifiers
Power supply
24V DC (21V to 36V including 10% peak-to-peak max. ripple)
max. current 3A
Command signal
Input impedance
0 to +10V DC, or 0 to –10V DC, or –10V to +10V DC
47 kΩ
7-pin plug connector
Pin connections:
A
B
C
D
E
F
G
Power supply +ve
Power 0V
Signal 0V
+ve voltage command signal
–ve voltage command signal
Monitor output
Protective ground
Electro-magnetic compatibility (EMC):
Emission (10 v/m)
Immunity (10 v/m)
See notes regarding EMC, below and on pages 18 and 29.
EN 50081-2
EN 50082-2
Gain adjustment 25 to 125%
Factory set adjustments Deadband, gain, dither and offset
Monitor point signal
Output impedance
0,5V per amp solenoid current
10 kΩ
Power stage PWM frequency 2 kHz nominal
Repeatability, valve-to-valve (at factory settings):
Flow gain at 100% command signal
v5%
Protection:
Electrical
Mechanical
Reverse polarity protected
IEC 144, Class IP65
Relative humidity 65 to 85% at 20 to 70C (68 to 158F)
Supporting products:
Auxiliary electronic modules (DIN-rail mounting):
EHA-CON-201-A-2* signal converter
EHD-DSG-201-A-1* command signal generator
EHA-RMP-201-A-2* ramp generator
EHA-PID-201-A-2* PID controller
Subplates, size 03
Mounting bolts
Note: If not using Vickers recommended bolt kits, bolts must be to ISO 898 grade 12.9 or stronger.
This product has been designed and tested to meet specific standards outlined in the European
Electromagnetic Compatibility Directive (EMC) 89/336/EEC, amended by 91/263/EEC, 92/31/EEC and
93/68/EEC, article 5. For instructions on installation requirements to achieve effective protection levels,
see this leaflet, the Installation Wiring Practices for Vickers Electronic Products leaflet 2468, and leaflet
02-123931A which is packed with every KA valve. Wiring practices relevant to this Directive are indicated by
Electromagnetic Compatibility (EMC).
21
K(A)DG4V-3 and K(A)TG4V-3 Flow Paths
Valve/Flow Path Spool Symbol
K(A)DG4V-3 with Looped Flow Path.
P→A or B, plus B or A→T
**C28S
AB
PT
**C03F
**C07N
**C13N
**C20N
AB
PT
K(A)DG4V-3 with Single Flow Path.
P→A or B, or A or B→T
**C03F
**C07N
**C13N
**C20N
AB
PT
K(A)TG4V-3 with Single Flow Path.
P→A or B, or A or B→T
**B03F
**B07N
**B13N
**B20N
AB
PT
K(A)TG4V-3 with Parallel Flow Path.
P→B and A→T
**B13N
**B20N
AB
PT
K(A)TG4V-3 with Looped Flow Path.
P→A or B, plus B or A→T
**B03N
**B07N
**B13N
AB
PT
K(A)TG4V-3 with Looped Flow Path.
P→A or B, plus B or A→T
**B28S
AB
PT
22
K(A)DG4V-3 Flow Gain Curves
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
14
12
10
8
6
4
2
Looped Flow Path
USgpm
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
17,5
15,0
12,5
10,0
7,5
5,0
2,5
l/min
100 203040 50 6070 80 90100
Command signal (% of max. signal)
Flow rate
100 203040 50 6070 80 90100
Command signal (% of max. signal)
USgpm
Flow rate
l/min
l/min
USgpm
Flow rate
2.0
1.5
1.0
0.5
9
8
7
6
5
4
3
2
1
100 203040 50 6070 80 90100
Command signal (% of max. signal)
2.5
At the stated valve pressure drops, the percentage command signals are applicable to whichever solenoid is energized.
Spool 2C03F" P to A or B plus B or A to T
Spool 2C07N" P to A or B plus B or A to T
Spool 2C13N" P to A or B plus B or A to T
350 bar (5080 psi)
100 bar (1450 psi)
50 bar (725 psi)
30 bar (435 psi)
10 bar (145 psi)
350 bar (5080 psi)
100 bar (1450 psi)
30 bar (435 psi)
10 bar (145 psi)
100Ć350 bar (1450Ć5080 psi)
30 bar (435 psi)
10 bar (145 psi)
10
9
8
7
6
5
4
3
2
1
6
5
4
3
2
1
40
35
30
25
20
15
10
5
25
20
15
10
5
30 bar (435 psi)
350 bar (5080 psi)
10 bar (145 psi)
Command signal (% of max. signal)
Command signal (% of max. signal)
Flow rate
Flow rate
10 bar (145 psi)
30 bar (435 psi)
350 bar (5080 psi)
100 bar (1450 psi)
0 !02030405060708090100
0 !02030405060708090100
Spool 2C20N" P to A or B plus B or A to T
Spool 2C28S" P to A or B plus B or A to T
l/min
USgpm
l/min
USgpm
Curves shown are for spool types 2". These points will vary
from valve to valve, but can be adjusted using the deadbandĆ
compensation feature of the drive amplifier. For spool types
33", the curves are similar, but flow starts at slightly higher
command signals.
23
7
6
5
4
3
2
1
25
20
15
10
5
Single Flow Path
At the stated valve pressure drops, the percentage command signals are applicable to whichever solenoid is energized.
Curves shown are for spool types 2". These points will vary
from valve to valve, but can be adjusted using the deadbandĆ
compensation feature of the drive amplifier. For spool types
33", the curves are similar, but flow starts at slightly higher
command signals.
Command signal (% of max. signal)
Flow rate
30 bar (435 psi)
100 bar (1450 psi)
350 bar
(5080 psi)
5 bar (72 psi)
0 !02030405060708090100
Spool 2C20N" P to A or B
l/min
USgpm
16
14
12
10
8
6
4
2
17,5
15,0
12,5
10,0
7,5
5,0
2,5
5.0
4.0
3.0
2.0
1.0
12
10
8
6
4
2
100 203040 50 6070 80 90100
Command signal (% of max. signal)
100 203040 506070 80 90100
Command signal (% of max. signal)
l/min
USgpm
USgpm
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
3.0
2.5
2.0
1.5
1.0
0.5
l/min
USgpm
Flow rateFlow rate
100 203040 506070 80 90100
Command signal (% of max. signal)
Flow rate
l/min
Spool 2C03F" P to A or B
Spool 2C07N" P to A or B
Spool 2C13N" P to A or B
100Ć350 bar (1450Ć5080 psi)
50 bar (725 psi)
30 bar (435 psi)
5 bar (72 psi)
350 bar (5080 psi)
100 bar (1450 psi)
30 bar (435 psi)
5 bar (72 psi)
350 bar (5080 psi)
100 bar (1450 psi)
50 bar (725 psi)
30 bar (435 psi)
5 bar (72 psi)
24
K(A)TG4V-3 Flow Gain Curves
Single Flow Path
16
14
12
10
8
6
4
2
100 203040506070 8090100
Command signal (% of max. signal)
l/min
USgpm
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
Flow rate
Spool 2B07N" P to A or B
350 bar (5080 psi)
100 bar (1450 psi)
30 bar (435 psi)
5 bar (72 psi)
12
10
8
6
4
2
3.0
2.5
2.0
1.5
1.0
0.5
l/min
USgpm
Flow rate
100 203040 50 6070 80 90100
Command signal (% of max. signal)
Spool 2B03F" P to A or B
350 bar (5080 psi)
100 bar (1450 psi)
50 bar (725 psi)
30 bar (435 psi)
5 bar (72 psi)
Curves shown are for spool types 2". These points will vary
from valve to valve, but can be adjusted using the deadbandĆ
compensation feature of the drive amplifier. For spool types
33", the curves are similar, but flow starts at slightly higher
command signals.
17,5
15,0
12,5
10,0
7,5
5,0
2,5
5
4
3
2
1
100 203040 50 6070 80 90100
Command signal (% of max. signal)
USgpm
Flow rate
l/min
Spool 2B13N" P to A or B
100Ć350 bar (1450Ć5080 psi)
50 bar (725 psi)
30 bar (435 psi)
5 bar (72 psi)
7
6
5
4
3
2
1
25
20
15
10
5
Command signal (% of max. signal)
Flow rate
30 bar (435 psi)
100 bar (1450 psi)
350 bar
(5080 psi)
0 !02030405060708090100
Spool 2B20N" P to A or B
l/min
USgpm
5 bar (72 psi)
At the stated valve pressure drops, the percentage command signals are applicable to whichever solenoid is energized.
25
Parallel Flow Path
5 bar (72 psi)
Spool 2B13N" P to B and A to T
Spool 2B20N" P to B and A to T
8
7
6
5
4
3
2
1
30
25
20
15
10
5
100 20304050 60708090100
Command signal (% of max. signal)
USgpm
Flow rate
l/min
10
9
8
7
6
5
4
3
2
1
40
35
30
25
20
15
10
5
Flow rate
l/min
USgpm
100 2030405060708090100
Command signal (% of max. signal)
100 bar (1450 psi)
30 bar (435 psi)
210 bar (3000 psi)
30 bar (435 psi)
210 bar
(3000 psi)
5 bar (72 psi)
100 bar (1450 psi)
At the stated valve pressure drops, the percentage command signals are applicable to whichever solenoid is energized.
Curves shown are for spool types 2". These points will vary
from valve to valve, but can be adjusted using the deadbandĆ
compensation feature of the drive amplifier. For spool types
33", the curves are similar, but flow starts at slightly higher
command signals.
26
Power Capacity Envelopes
K(A)DG4VĆ3 Single Flow Path
Valve pressure drop
Flow rate
0102030
024 68
l/min
USgpm
5000
4000
3000
2000
1000
0
350
300
200
100
C07N
C03F
C20N
C13N
psi bar
Valve pressure drop
5000
4000
3000
2000
1000
0
350
300
200
100
0102030 l/min40
0 2 4 6 8 USgpm10
03F
07N
28S
20N
13N
psi bar
K(A)DG4VĆ3 and K(A)TG4VĆ3
Looped Flow Path
Flow rate
K(A)TG4VĆ3 Single Flow Path
B20N
B13N
B07N
B03F
Valve pressure drop
5000
4000
3000
2000
1000
0
350
300
200
100
psi bar
0246 8USgpm
0 102030l/min
Flow rate
K(A)TG4VĆ3 Parallel Flow Path
B20N
B13N
0 10 20 30 l/min40
02468 USgpm10
Flow rate
Valve pressure drop
3500
3000
2500
2000
1500
1000
500
0
250
200
150
100
50
psi bar
Max. system pressure = max. pressure
for port T: 210 bar (3000 psi)
27
K(A)DG4V-3 and K(A)TG4V-3 Frequency Response
For amplitude of "25% maximum
stroke about the 50% position, at
p (P→B) = 5 bar (72 psi).
Amplitude (dB)
Frequency (Hz)
1 2 3 4 5 67810 20 304050
0
–3
–6
–9
0
45
135
90
Phase lag (degrees)
Wiring
Connections must be made via the 7-pin
plug mounted on the amplifier.
Recommended cable sizes are:
Power cables:
For 24V supply
0,75 mm
2
(18 AWG) up to 20m (65 ft)
1,00 mm
2
(17 AWG) up to 40m (130 ft)
Signal cables:
0,50 mm
2
(20 AWG)
Screen:
A suitable cable would have 7 cores, a
separate screen for the signal wires, and
an overall screen. See wiring
connection diagram on page 29.
Gain
Modulator
+15V
Valve envelope
7-pin plug connections
+24V
A
Power 0V
Signal 0V
Protective ground
Solenoid drive 2
Deadband
Positive
Monitor output
Negative
Command
signal
voltage
(see table)
–15V
0V
Solenoid drive 1
B
C
F
D
E
G
Dither
28
KADG4V-3 & KATG4V-3 Electrical Block Diagram
Command Signals and Outputs
7-pin plug
Flow
Pin D Pin E
Flow
direction
Positive 0V
0V Negative
P to A
U
D
-U
E
= Positive
Negative 0V
0V Positive
P to A
U
D
-U
E
= Negative
Warning
All power must be switched
off before connecting or
disconnecting any plugs.
29
KADG4V-3 & KATG4V-3 Typical Connection Arrangements
Warning
Do not ground pin C. If the
local ground (pin C) is not used for
differential monitor electronics, do not use.
Read monitor pin F with respect to ground.
User panel
Outer
Screen
“KA” valve
A
B
F
G
D or E
E or D
C
+24V
0V
Demand
Signal
Solenoid
Current
Monitor
Power
Supply
Enclosure
Valve must
be connected
to ground via
subplate
0V
Input
+/– 10V
0V
Connector shell
Solenoid current monitor voltage (pin F)
will be referenced to the KA valve local
ground. A “local ground” (pin C) is
provided for optional use by differential
input customer supplied electronics.
Wiring Connections for Valves with integral Amplifier
Note: In applications where the valve
must conform to European RFI/EMC
regulations, the outer screen (shield) must
be connected to the outer shell of the
7-pin connector and the valve body must
be fastened to the earth ground. Proper
earth grounding practices must be
observed in this case, as any differences
in command source and valve ground
potentials will result in a screen (shield)
ground loop.
0V must be
connected
to ground
Warning
Electromagnetic Compatibility (EMC)
It is necessary to ensure that the valve is wired-up as above. For effective protection, the user
electrical cabinet, the valve subplate or manifold, and the cable screens should be connected to
efficient ground points. The metal 7-point connector, part no. 934939, should be used for the
integral amplifier.
In all cases, both valve and cable should be kept as far as possible from any sources of
electromagnetic radiation such as cables carrying heavy current, relays and certain kinds of
portable radio transmitters, etc. Difficult environments could mean that extra screening may be
necessary to avoid the interference.
It is important to connect the 0V lines as shown above. The multi-core cable should have at least
two screens to separate the demand signal and monitor output from the power lines.
Drain wire
Inner screen
30
KDG4V-3 and KTG4V-3 Installation Dimensions
16,8 (0.66)
3rd angle
projection
24,0
(0.94)
24.5
(0.96)
21,75
(0.86)
48,00
(1.9)
KDG4V-3
Dimensions in mm (inches)
Plug connector can be repositioned in
90° increments by loosening knurled
nut, turning coil, and re-tightening.
164,0 (6.46) without override
74,0 (2.9)
51.0
(2.0)
35,0
(1.4)
13,0 (0.50) for
plug removal
Seal
51
(2.01)
27
(1.06)
22,5
(0.88)
∅
M3 thread
5,5
(0.22)
1,5
(0.06)
30,5
(1.20)
26,5
(1.04)
27,5
(1.08)
18
(0.71)
DIN 43650 plug connector is not
included with valve and must be
ordered separately. For black plug
marked B, order part 710775. For gray
plug marked A, order part 710776.
Conductor cross-sectional area:
0,5 to 1,5 mm
2
(0.0008 to 0.0023 in
2
)
Cable diameter range:
6 to 10 mm (0.24 to 0.40 in)
To bleed air, loosen plug
in end of core tube;
re-tighten after bleeding
is complete.
74,0 (2.9)
16,8 (0.66)
98,8 (3.89)
238,0 (9.37) without overrides
10,0 (0.4) for plain
manual override
10,0 (0.4) for plain
manual override
61,0 (2.4) for coil removal
14,0 (0.55) for
weather-resistant
manual overrides
14,0 (0.55) for
weather-resistant
manual overrides
24,5
(0.96)
61,0 (2.4) for coil removal
21,75
(0.86)
51,0
(2.0)
35,0
(1.4)
13,0 (0.5)
for plug
removal
∅ 5,6 (0.22) thru.
∅ 9,0 (0.35) c’bore
to depth shown.
4 places
98,87 (3.89)
∅ 5,6 (0.22) thru.
∅ 9,0 (0.35) c’bore
to depth shown. 4 places
Plug connector can be repositioned in
90° increments by loosening knurled
nut, turning coil, and re-tightening.
10,0 (0.4) for plain
manual override
14,0 (0.55) for weather-resistant
manual overrides
61,0 (2.4) for coil removal
Means of connection: screw terminals
KTG4V-3
Dimensions in mm (inches)
Solenoid Plug Connectors
Dimensions in mm (inches)
31
KADG4V-3 and KATG4V-3 Installation Dimensions
Metal plug 934939
Cable outside diameter 8,0 to 10,5 (0.31 to 0.41)
Must be used for full EMC protection. See also
warning note on page 18.
Plastic plug 694534
PG11. Cable maximum
outside diameter 11,0
(0.43)
7-pin plug
40,0
(1.6)
16,8 (0.66)
16,8 (0.66)
98,8 (3.89)
238,0 (9.37) without overrides
10,0 (0.4) for plain
manual override
10,0 (0.4) for plain
manual override
61,0 (2.4) for coil removal
14,0 (0.55) for
weather-resistant
manual overrides
14,0 (0.55) for
weather-resistant
manual overrides
24,5
(0.96)
61,0 (2.4) for coil removal
21,75
(0.86)
51,0
(2.0)
∅ 5,6 (0.22) thru.
∅ 9,0 (0.35) c’bore
to depth shown.
4 places
Remove plug for
access to the gain
potentiometer
227,0 (8.9)
LED “Power on”, green
274,0 (10.8) max.
128,0 (5.1)
max.
Do not remove
these plugs.
PG 11 cable gland. Max.
cable diameter 11,0 (0.43),
on 7-pin plug supplied with
valve. Replacement part
numbers shown at left.
3rd angle
projection
24,0
(0.94)
21,75
(0.86)
To bleed air, loosen plug
in end of core tube;
re-tighten after bleeding
is complete.
98,87 (3.89)
KATG4V-3
Dimensions in mm (inches)
7-pin plugs for integral
amplifiers
Metal.............934939
Plastic............694534
(Metal plug must be used
for full EMC protection.)
227,0 (8.9)
48,0
(1.9)
128,0 (5.1)
max.
200,0 (7.9) max.
Additional dimensions
are as shown above.
Remove plug for
access to the gain
potentiometer
Additional dimensions
are as shown below.
25,0
(1.0)
7-pin plug
KADG4V-3
Dimensions in mm (inches)
32
Mounting Requirements
12,70"0,20
(0.500"0.008)
5,10"0,20
(0.201"0.008)
0,75"0.10
(0.030"0.004)
M5-0.8-6H (.1900-24
UNC-2B) thread*
* Minimum thread depth is
1
1
/
2
× bolt diameter (D).
Recommended full thread depth
is 2 × D + 6 mm. This aids in
interchangeability of valves and
reduces number of fixing bolt
lengths. Recommended
engagement of fixing bolt thread
for ferrous mountings is 1
1
/
4
× D.
6,30
(0.248)
∅ max.
5,00
(0.197)
R max.
4,00"0,20
(0.157"0.008)
∅
locating pin hole
** Dimensions specifying area
within dotted lines are
minimum dimensions for
mounting surface. Corners of
rectangle may be radiused
as shown.
Dimension is minimum
spacing distance between valve
and adjacent obstructions such
as wall or other valve.
Dimension is also minimum
distance from centerline to
centerline of two similar
mounting surfaces placed on
manifold block. Fixing holes are
at equal distances to dimension.
5,50"0,20
(0.610"0.008)
25,90"0,20
(1.020"0.008)
31,00"0,10
(1.220"0.004)
21,50"0,20
(0.848"0.008)
30,20"0,20
(1.188"0.008)
33,00"0,10
(1.299"0.004)
40,50"0,10
(1.594"0.004)
51,0**
(2.01)
50,0
(1.97)
31,75"0.10
(1.250"0.004)
43,0**
(1.69)
Mounting bolt torque:
4,5 to 6,0 Nm
(40 to 50 lb-in)
Mounting Surface
Mounting surface must be flat within
0,013 mm (0.0005 inch) and smooth
within 1,1 micrometer (45 microinch).
Mounting bolts should be grade 12.9
(SAE grade 7) or better.
Subplate and Bolt Kits
Valve subplates and mounting bolts are
available and must be ordered separately.
Example:
(1) KDG4V-3S-2C08S-M-FW-G5-60 valve
(1) KDG4V-3S-2C08S-MU1-H5-60 valve
(1) DGVM-3-10-S subplate
(1) BK590716 inch mounting bolt kit
(1) BK616452M metric mounting bolt kit
33
Fluid Cleanliness
Proper fluid condition is essential for long
and satisfactory life of hydraulic
components and systems. Hydraulic fluid
must have the correct balance of
cleanliness, materials, and additives for
protection against wear of components,
elevated viscosity and inclusion of air.
Essential information on the correct
methods for treating hydraulic fluid is
included in Vickers publication 561
“Vickers Guide to Systemic Contamination
Control,” available from your local Vickers
distributor or by contacting Vickers,
Incorporated. Recommendations on
filtration and the selection of products to
control fluid condition are included in 561.
Recommended cleanliness levels, using
petroleum oil under common conditions,
are based on the highest fluid pressure
levels in the system and are coded in the
chart below. Fluids other than petroleum,
severe service cycles, or temperature
extremes are cause for adjustment of
these cleanliness codes. See Vickers
publication 561 for exact details.
Vickers products, as any components, will
operate with apparent satisfaction in fluids
with higher cleanliness codes than those
described. Other manufacturers will often
recommend levels above those specified.
Experience has shown, however, that life
of any hydraulic component is shortened in
fluids with higher cleanliness codes than
those listed below. These codes have
been proven to provide a long, trouble-free
service life for the products shown,
regardless of the manufacturer.
System Pressure Level
bar (psi)
Product
<138 (<2000 )
138–207 (2000–3000) 207+ (3000+)
Vane pumps, fixed 20/18/15 19/17/14 18/16/13
Vane pumps, variable 18/16/14 17/15/13
Piston pumps, fixed 19/17/15 18/16/14 17/15/13
Piston pumps, variable 18/16/14 17/15/13 16/14/12
Directional valves 20/18/15 20/18/15 19/17/14
Proportional valves 18/16/13 18/16/13 17/15/12
Servo valves 16/14/11 16/14/11 15/13/10
Pressure/Flow controls 19/17/14 19/17/14 19/17/14
Cylinders 20/18/15 20/18/15 20/18/15
Vane motors 20/18/15 19/17/14 18/16/13
Axial piston motors 19/17/14 18/16/13 17/15/12
Radial piston motors 20/18/14 19/17/13 18/16/13
