Publ. 7–EN 5150–B, replaces 7–EN 515–A
DENISON HYDRAULICS
Seat Valves Cartridges
Series CAR
Ordering Code
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FEATURES, SYMBOL
2
A
B
X
Z1
SYMBOL
FEATURES
x
The same modular design is used in all valve sizes and the valve are used for a
variety of functions:
– as a leak proof directional control
– as a pressure control for the adjustment or limitation of pressure
– as a check valve to obtain unidirectional flow
– as a throttle valve to control and limit the rate of flow.
x
A variety of standard combinations of internal components are provided as well
as additional options to suit special circuitry. Typical of more than sixty options/
additions are: Stroke limiters, vent valve sandwich, shuttle valves, end position
control and sleeves with different seat areas.
x
Seat valves series CAR are designed for 350 bars operation. Whilst providing
extremelyfast response theyalso offer sensitive control without system pressure
peaks.
x
DENISON seat valves series CAR are provided in a full range of manifold
mounted units to supplement the body designs series D4S. Internal components
are interchangeable with poppets and sleeves selected to give the desired
function.
x
Worldwide DENISON service.
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Ordering Code
DESCRIPTION
3
AX
AB
AA
Pilot pressure pX
operates on area AX
together with spring
force p
F
System pressure pB
operates on ring
area A
B
System pressure pA
operates on seat
area A
A
DESCRIPTION
DENISON Seat valves are hydraulically operated poppet type cartridges design to
control flow direction either from Port A to Port B or vice versa depending upon the
control circuit.
The cracking pressure is proportional to the ratio of control area to seat or ring
area.
Pilot pressure at Port X acting on the control area closes the seat valve thus forces
generated by cylinders or hydraulic motors can be decelerated to zero by control-
ling the differential pressure. Acceleration or deceleration of the fluid which the
seat valve is controlling will take place whilst the valve is opening or closing and
the time normally necessary to overcome overlap in conventional spool valves is
eliminated. In addition to this improved response time the action also ensures that
the seat valve functions without introducing system pressure peaks or shock and
therefore machine cycle times may be reduced without detriment. Various seat
valve combinations are manufactured in quantity to suit a wide variety of spe-
cialised industrial applications.
CRACKING PRESSURE Cracking Pressure depends on the area ratio of individual combination of spool
and sleeve.
EXAMPLE With a ratio of 95 % seat area to 5 % ring area and a spring pressure = 2.2 bars then
the following cracking pressures apply.
Direction
supposed pilot pressure p
X (bar)
of flow
0 9 15 30 100 250 330
pA AfB 2.2 11.7 18 34 108 265 350
pB BfA
42 222 342 > 350 > 350 > 350 > 350
646 2052 5035 6650
It is obvious that with flow direction B to A and a control (pilot pressure) at X of
15 bars, pressure in excess of maximum valve rating would be exceeded before
the valve would open. Under static conditions the valve would still remain leakproof
even at substantially higher pressures.
Ordering Code
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TECHNICAL DATA
4
GENERAL
x
Type of unit Seat valve
x
Design Poppet type
x
Type of mounting Manifold mounted
x
Port sizes
1
⁄2HH,1
1
⁄2HH
x
Mounting position Optional
x
Direction of flow A–B or B–A
x
Ambient temperature range – 20 . . . + 60 hC
x
Suitability for special Consult DENISON
working conditions
HYDRAULIC CHARACTERISTICS
x
Operating pressure range
–port A,BandX 0...350 bar
– port Y without pressure to tank
x
Fluid temperature range – 18 . . . + 80 hC
x
Viscosity range 10 . . . 650 cSt
x
Recommended operating viscosity 30 cSt
CAR4 (
1
⁄2HH)CAR2(1
1
⁄2HH)
x
Nominal flow 150 l/min 450 l/min
x
Max. flow 180 l/min 600 l/min
x
Pilot volume CAR4 CAR2
– sleeve 95 % seat area,
spool 15 h chamfer 1.00 cm
3
4.75 cm
3
– sleeve 95 % seat area,
spool 45 h chamfer 1.11 cm
3
5.60 cm
3
– sleeve 60 % seat area,
spool 45 h chamfer 0.77 cm
3
3.75 cm
3
x
Diagrams
TYPE OF ADJUSTMENT
x
Electric (Vent valve VV01) by solenoid
x
Nominal voltage Refer to ordering code page 12
x
Permissible voltage difference + 5 . . . – 10 %
x
Max. coil temperature + 180 hC, class H
x
Type of current Alternating current (AC)
Direct current (DC)
x
Input power 31 W
x
Holding 78 VA
x
Inrush 264 VA
x
Relative operating period 100 %
x
Type of protection IP 65
10
9
8
7
6
5
4
3
2
1
0
0 100 200 300 400 500 600
350
300
200
100
0
0 5 10 15 20 25 30 35 40 45
Flow (l/min) Leakage (cm
3
/min) XfB
Oil temperature 50 hC; oil viscosity 38 cSt
Pressure drop „ p(bar)
Pressure p (bar)
CAR4
CAR2
CAR4
CAR2
Ordering Code
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CONTROL FUNCTIONS AVAILABLE
5
The following are typical of the functions which can be achieved in a circuit incorporating single or multiple seat valves.
Further control functions on request
Way function
Way function
Flow function
Pressure function
Check function
Check funktion
Pilot
pressure Direction
Area Z1 p
X
of flow Notes
vented = 0 A–B Area Z1 may be vented via X,
B–A or a DENISON VV01 three way
vent valve.
When vented, the cracking
pressure equals the spring force.
connected with = p
A
A & B blocked Area Z1 may be connected via
port A and B or a shuttle valve to ports A and B.
=p
B
The holding pressure on Z1 will
be supplied from port A or Port B,
depending upon which is the
greater.
vented = 0 A–B An adjustable stroke limiter can
B–A be selected to limit the spool
aperture, which produces flow
restriction in either direction.
external > 0 A–B Pressure is limited by
pilot pressure application of external pilot
pressure p
X
to port X1.
connected with = p
B
A–B Plug may be fitted between
port B blocked to A A and X leaving X connected
to B (leakproof check valve
function from B–A).
connected with = p
A
B–A Plug may be fitted between
port A blocked to B B and X leaving X connected
to A (check valve function from
A–B, not leakproof).
Ordering Code
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ORDERING CODE, RECOMMENDATIONS
6
RECOMMENDED SPRING, SPOOL, SLEEVE COMBINATIONS
Spring
Spool
Sleeve
CAR * – * – bbb
Directional and flow
control function
Flow AfB
Check valve
function
m 144
14 *n
Directional and flow
control function
Flow AfBorBfA
Pilot operated check
valve function
m 344
34 *n
Pressure control
function
Check valve
function
m 11
+
4
15*n
Flow control function
with throttle spool B (0h)
or C (3h)
(for CAR2 only)
Directional control
function with safety
spool (for end position
control, page 14)
m 3B(C)*
Pressure unloading
function
m 12
+
4
+
spool 1 & 2: spring side pressure must not exceed
pressure at A-port by more than 20 bar.
* spring as per requested cracking pressure.
Model Number: CAR . ....–– –
1 Cartridge
CAR 4 =
1
⁄2HH
CAR 2 = 1
1
⁄2HH
2 Type of mounting
K = main valve (spool, sleeve, spring)
H = main valve with cap
(port Y
1
=G
1
⁄4HH)
O*= main valve and plug on top
(G-thread)
T* = main valve and plug on top
1
1
⁄8HH–12 UNF thread (only CAR4)
U = main valve and plug at the bottom
(G-thread)
B = main valve and plug at the bottom
1
1
⁄8HH–12 UNF thread (only CAR4)
(for O, T, U, B with spacer)
3 Type of sleeve **
1 = seat area A
A =95%
3 = seat area A
A =60%
4 Type of spool **
1 = with closed bottom and 15 h chamfer
2 = with 0.8 mm dia. orifice at the bottom and 15 h chamfer (only CAR4)
with 1.2 mm dia. orifice at the bottom and 15 h chamfer (only CAR2)
4 = with closed bottom and 45 h chamfer
5 = with closed bottom and 45 h chamfer and two holes in line
B = throttle spool with 10 h chamfer
C = throttle spool with 3 h chamfer
k
only CAR2
* Series CAR4 only with spool type 5
** for spool/sleeve combination see below
6 Seal class
1 = NBR-seal (Standard)
4=EPR
5 = FPM-seals (Viton`)
5 Spring (approx. cracking pressure, bar)
Sleeve 1
AA = 95 %
AB = 5 %
Sleeve 3
AA = 60 %
AB = 40 %
AfBAfBBfA
CAR 4 CAR 2 CAR 4 CAR 2 CAR 4 CAR 2
1 = 2.8 3.5 6.5 6.5 9.5 11.0
2 = 0.5 0.5 1.0 1.0 1.5 1.7
3 = 0.3 0.3 0.6 0.6 0.9 1.0
4 = 2.2 2.2 4.0 3.5 5.5 6.0
5 = – 9.0 – 16.0 – 28.0
6 = 1.2 1.2 2.0 2.2 3.0 3.8
7 = 3.0 – 8.0 – 12.0 –
1 2 3 4 5 6
Ordering Code
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DIMENSIONS FOR CAR 4–K & CAR 4–H
7
CAR 4-K
Weight: 0.07 kg
Example of spool code 4
spool with closed bottom and 45h chamfer
Ports Function
A Inlet or Outlet
B Outlet or Inlet
CAR 4-H
Weight: .0 kg
(G
1
⁄4 HH)
Mounting screws must be ordered separately: Order no.
4 Screws
3
⁄8 HH–24 UNF x
3
⁄4 HH lg.........359–15220–0
orM0x45;DIN92-0.9 ..........700–71602–8
4Lockwasher ................700–72166–8
Example of spool code 2
spool with 0.8 mm dia. orifice at the bottom and 5h chamfer
Port Y:
only in connection with
vent valve VV01
3
⁄8 HH–24 UNF or
M 0 (20 dp.)
Ports Function
A & B Inlet or Outlet (optional)
X & Y pilot holes
1
)
1
) drilled according to function
Ordering Code
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DIMENSIONS FOR CAR 4–0/T & CAR 4–U/B
8
CAR 4-0/T
Weight: 0.1 kg
Series CAR 4-O/T
only with spool type 5,
with closed bottom, 45 h chamfer
and two holes in line
torque 30 Nm
CAR 4–0
CAR 4–T
G
7
⁄8 HH
⁄8 HH–12 UNF
* CAR 4–0 = 15 h
CAR4–T=20h
Ports Function
A & B Inlet or Outlet (optional)
CAR 4-U/B
Weight: 0.1 kg
Example of spool code 1
spool with closed bottom and 5h chamfer
torque 30 Nm
1
1
⁄8 HH-12 UNF
G
7
⁄8 HH
30 l min.
31,5 l min.
CAR 4–B
CAR 4–U
CAR 4–B
CAR 4–U
Ports Function
A & B Inlet or Outlet (optional)
X pilot hole
1
)
1
) drilled according to function
Ordering Code
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DIMENSIONS FOR CAR 2–K & CAR 2–H
9
CAR2-K
Weight: 0.25 kg
Example of spool code 1
spool with closed bottom
and 5h chamfer
Example of spool code 2
spool with 1.2 mm dia. orifice at the bottom
and 5h chamfer
Ports Function
A Inlet or Outlet
B Outlet or Inlet
CAR 2–H
Weight: 1.1 kg
Y
1
(G
⁄4 HH)
43.5
Mounting screws must be ordered separately: Order no.
4 Screws
3
⁄8 HH–24 UNF x
3
⁄4 HH lg.........359–15220–0
orM0x45;DIN92-0.9 ..........700–71602–8
4Lockwasher ................700–72166–8
Example of spool code 4:
spool with closed bottom
and 45h chamfer
Port Y:
only in conection with
vent valve VV01
3
⁄8 HH–24 UNF
or M 0
Ports Function
A & B Inlet or Outlet (optional)
X & Y pilot holes
1
)
1
) drilled according to function
Ordering Code
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DIMENSIONS FOR CAR 2–0 & CAR 2–U
10
CAR2-0
Weight: 0.7 kg
Example of spool code 2
spool with 1.2 mm dia. orifice at the bottom
and 5h chamfer
torque 30 Nm
Ports Function
A & B Inlet or Outlet (optional)
X pilot port
CAR 2–U
Weight: 0.7 kg
G
⁄2 HH
reamer
access
max. 4 mm
Example of spool code 5
spool with closed bottom,
45h chamfer and two holes in line
torque 30 Nm
G1
1
⁄2 HH
reamer access
Ports Function
A & B Inlet or Outlet (optional)
X pilot port
Ordering Code
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SHUTTLE VALVES FOR CAR 4–H & CAR 2–H
11
Order no. S16–39303–0 / Weight: 1.2 kg
S16–92523–0 / Weight: 0.8 kg
( ) Dimensions in brackets are for version
with shuttle valve S6–92523–0
33
(2)
94 (73)
90
70
max.
39 (8)
max.
47
(26)
4 Mounting screws must be ordered separately: Order no.
3
⁄8HH–24 UNF x 5
⁄2HH lg. 359–15420–8
or M 0 x 40; DIN 92–2.9 361–11424–8
3
⁄8HH–24 UNF x 4
⁄2HH lg. 359–15380–8
or M 0 x 20; DIN 92–0.9 700–71456–8
k
k
for version with shuttle valve S16–39303–0
for version with shuttle valve S6–92523–0
G
⁄4 HH, external drain only out of the cap
cap
of
CAR 4-H
or CAR 2-H
vent valve
VV01
(see page 12)
shuttle valve
S6–39303–0
or
S6–92523–0
Coil can be positioned:
–at90h intervals (AC)
–inanyposition(DC)
Installation dimensions for:
CAR4-H–seepage7below
CAR2-H–seepage9below
Manifold
cap
vent valve VV01
(symbol versions
seepage13)
shuttle valve S16–39303–0
(pilot oil from A + B)
CAR 4-H
or
CAR 2-H
Manifold
cap
vent valve VV01
(symbol versions
seepage13)
shuttle valve
S6–92523–0
CAR 4-H
or
CAR 2-H
Pilot oil from A + B.
From BfA check valve function.
Note: Shuttle valves only use in connection with vent valve VV01.
Ordering code for VV01 see page 12.
Ordering Code
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ORDERING CODE & DIMENSIONS FOR VENT VALVE VV01
12
Model Number: VV0 – 3 . . ... – . – 1
1 Series
2 Spool position
1 = solenoid de-energized: free flow from Z to Y (CAR = open)
solenoid energized: X to Z (CAR = blocked)
2 = solenoid de-energized: X to Z (CAR = blocked)
solenoid energized: free flow from Z to Y (CAR = open)
3 Control
1 = solenoid with manual override
2 = solenoid without manual override
4 Solenoid voltage and current
W01=115V/60Hz
W02=230V/60Hz
W06=115V/50Hz
W07=230V/50Hz
G0R = 12 V
G0Q = 24 V
G0H = 48 V
k
AC
k
DC
5 Design letter
D = for AC solenoid
E = for DC solenoid
6 Seal class
1 = NBR-seals (Standard)
4=EPR
5 = FPM-seals (Viton`)
Please note:
For valve version CAR combined with vent valve VV01, the vent valve
must be ordered separately.
For VV01 with DC solenoid, plug-in connector must be
ordered separately. Order no. 167–01008–8.
Screws for installation with vent valve:
4 Screws
3
⁄8 HH–24 UNF x 3
⁄2 HH lg. or M0 x 90 (DIN 92-0.9)
Order no. 359–5340–0 Order no. 700–70808–8
G
⁄4 HH, external drain
Coil can be positioned:
–at90h intervals (AC)
–inanyposition(DC)
Cap
of
CAR 4-H
or CAR 2-H
vent valve
VV01
1.7 kg
CAR-Cartridge
in manifold
(see pages 7 & 9)
Note:
Further details for vent valve VV01 see publ. 3-EN 215.
View „A“
manual override
m „A“
1 2 3 4 5 6
Ordering Code
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ORDERING CODE EXPLANATION FOR VENT VALVE VV01
13
Cap
vent valve
example:
VV0–3*
CAR-
Cartridge
in manifold
control piston with slots
Function
Pilot pressure from XfZblocks
the 2/2-way valve CAR.
Drain from ZfY effects free flow
from AfBorBfA.
Port X and Y can be connected
internally or externally.
When port B is pressurised
drain must be connected
externally (port Y
1
).
PortYinVV01thenmust
be plugged.
Solenoid energized: CAR blocked.
Solenoid de-energized: free flow
from AfBorBfA.
Solenoid energized: free flow
from AfBorBfA.
Solenoid de-energized: CAR blocked.
k
VV0–3.–
k
VV0–32.–
CAR
CAR
Ordering Code
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END POSITION CONTROL FOR SERIES CAR
14
4 Mounting screws must be ordered separately: Order no.
3
⁄8HH–24 UNF x 5
⁄2HH lg. 359–15420–8
or M 0 x 40; DIN 92–2.9 361–11424–8
3
⁄8HH–24 UNF x 3
⁄2HH lg. 359–15340–0
or M 0 x 90; DIN 92–0.9 361–11343–8
k
k
for version with VV01
for version without VV01
vv
Order no. cap: S6–39499–0 or S6–39495–0
2
Order no. end position control: S26–58109–0 (incl. sleeve 3, spool A, spring 4)
End position control by proximity switch (incl. amplifier).
Valve open: proximity switch activated.
This proximity switch is pressure proof and has no wearing parts.
G
1
⁄4 HH, external drain out of the cap
cap
1
vent valve
VV0
(see page 12)
end position
control
2
1.6 kg
Installations dimensions
seepage9below
cable 2 m lg.
33withVV0
86 without VV0
Technical Data (Proximity switch):
Function: PNP, Contact
Supply voltage (U
S): 0...30 VDC
Supply voltage ripple: ≤ 0 %
Current consumption: max. 8 mA
Residual voltage L-Signal: U
S −2.2VatImax
Output current (l): ≤ 200 mA
Type of protection: IP 67
Ambient temperature: − 25 . . . + 70 hC
Wire cross-sectional area: 3 x 0.5 mm
2
U(V)
L-Signal
US
PNP contact
stroke
2.2
brown
black
blue
DC
other combinations
on request
Ordering Code
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STROKE LIMITER FOR CAR 2–K
15
Order no. S16–39490–0
Weight: 1 kg
Mounting screws must be ordered separately: Order no.
4 Screws
3
⁄8HH–24 UNF x 1
3
⁄4HH lg. 359–15220–0
or M 0 x 45; DIN 92–2.9 700–71602–8
Installation dimensions see page 9
below (without Y-port)
Adjustment should take
place at minumum pressure
Cap
CAR 2-K
Note:
Stroke limiter not in connection
with vent valve VV01, shuttle valve
and end position control.
Note:
Stroke limiters are used to throttle
the oil flow in both directions
(from AfBandBfA).
The product described is subject to continual development and the manufacturer reserves the right to change the specifications without notice.
Ordering Code
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