Accessory Valves
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UCV - Unload Control Valve
The UCV valve is used in the IF and IVA inlet modules as an emergency stop
feature. In the IF inlet it can also be used to unload the standby pressure for
energy saving and lower heat generation when no hydraulic functions are
used.
Hydraulic Data
Maximum Operating Pressure 345 bar [50000 psi]
Rated Flow 25 l/min
Internal Leakage Max. 0.15 ccm/min at 345 bar [5000 psi]
Contamination Level 20/18/15 acc. ISO 4406
Temperature Range -40 to +120ºC
Electrical Data
Power 345 bar [5000psi]
Voltage 12 V 24 V
Current 1.22 A 0.61 A
Resistance 9.8 Ω ±5% 39.3 Ω ±5%
Connector Type DIN 43650
Protection Class IP65
Electrical data
Ordering Code
UCV- 12- NC-
X
12 V 12
24 V 24
Normally Open NO
Normally Closed NC
Manual Override M
None X
PERFORMANCE (Cartridge Only)
SV08-20 Poppet, 2-Way, Normally Closed
DESCRIPTION
A solenoid-operated, 2-way, normally closed, piloted poppet-type, screw-in
hydraulic cartridge valve, intended to act as a blocking or load-holding device
for low fl ow circuits.
OPERATION
When de-energized, the SV08-20 acts as a check valve, allowing fl ow from to ,
while blocking fl ow from
to .
When energized, the cartridge’s poppet lifts to open the
to fl ow path. In this
mode, fl ow from
to is severely restricted. If this path is required, see model
SV08-22, page 1.041.1.
Operation of Manual Override Option: To override, push button in, twist counter-
clockwise 180°, and release. In this position, the valve will remain open.
To return to normal operation, push button in, twist clockwise 180°, and release.
Override will be detented in this position.
FEATURES
• Continuous-duty rated coil.
• Hardened seat for long life and low leakage.
• Optional coil voltages and terminations.
• Cartridges are voltage interchangeable.
• Unitized, molded coil design.
• Manual override option.
• Optional waterproof E-Coils rated up to IP69K.
• Industry common cavity.
• Compact size.
RATINGS
Operating Pressure: 207 bar (3000 psi)
Proof Pressure: 255 bar (3700 psi)
Flow: See Performance Chart
Internal Leakage: 0.15 cc/minute (3 drops/minute) max. at 207 bar (3000 psi)
Temperature: -40 to 120°C with standard Buna seals
Coil Duty Rating: Continuous from 85% to 115% of nominal voltage
Response Time: First indication of change of state with 100% voltage supplied
at 80% of nominal fl ow rating: Energized: 40 msec. De-energized: 46 msec.
Initial Coil Current Draw at 20°C: Standard Coil: 1.2 amps at 12 VDC;
0.13 amps at 115 VAC (full wave rectifi ed).
E-Coil: 1.4 amps at 12 VDC; 0.7 amps at 24 VDC
Minimum Pull-in Voltage: 85% of nominal at 207 bar (3000 psi)
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of
7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: No restrictions; See page 9.020.1
Cavity: VC08-2; See page 9.108.1
Cavity Tool: CT08-2XX; See page 8.600.1
Seal Kit: SK08-2X-T; See page 8.650.1
Coil Nut: Part No. 7004400;
For E-coils manufactured prior to 1-1-04, see page 3.400.1 for coil nut info.
SYMBOLS
USASI: ISO:
1.010.1
8.6/125
6.9/100
5.2/75
3.4/50
1.7/25
7.5
2
15.1
4
22.7
6
FLOW lpm/gpm
PRESSURE DROP bar/psi
to en ——
to de - - - -
32 cSt/150 ssu oil at 40°C
30.2
8
10.3/150
SOLENOID VALVES
HYDRAFORCE
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®
Blue rectangles are links to other catalog pages.
PERFORMANCE
SV08-21 Poppet, 2-Way, Normally Open
DESCRIPTION
A solenoid-operated, 2-way, piloted, poppet-type, normally open, screw-in, hydraulic
cartridge valve designed for low leakage in load-holding applications.
OPERATION
When de-energized, the SV08-21 allows fl ow from to . Flow from to is
severely restricted in this mode. If the
to path is required see model SV08-23,
page 1.050.1.
When energized, the valve’s poppet closes on its seat, blocking fl ow from
to .
In this mode the cartridge will allow
to fl ow after overcoming the solenoid force
(requires 3.4 to 10.3 bar / 50 to 150 psi).
Operation of Manual Override Option: To override, push and hold override button.
FEATURES
• Continuous-duty rated coil.
• Hardened seat for long life and low leakage.
• Optional coil voltages and terminations.
• Effi cient wet-armature construction.
• Cartridges are voltage interchangeable.
• Unitized, molded coil design.
• Manual override option.
• Optional waterproof E-Coils rated up to IP69K.
• Industry common cavity.
• Compact size.
RATINGS
Operating Pressure: 207 bar (3000 psi)
Flow: See Performance Chart
Internal Leakage: 0.15 cc/minute (3 drops/minute) max. at 207 bar (3000 psi)
Temperature: -40 to 120°C with standard Buna seals
Coil Duty Rating: Continuous from 85% to 115% of nominal voltage
Response Time: First indication of change of state with 100% voltage supplied at
80% of nominal fl ow rating: Energized: 50 msec.; De-energized: 16 msec.
Initial Coil Current Draw at 20°C: Standard Coil: 1.2 amps at 12 VDC;
0.13 amps at 115 VAC (full wave rectifi ed).
E-Coil: 1.4 amps at 12 VDC; 0.7 amps at 24 VDC
Minimum Pull-in Voltage: 85% of nominal at 207 bar (3000 psi)
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of
7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: No restrictions; See page 9.020.1
Cavity: VC08-2; See page 9.108.1
Cavity Tool: CT08-2XX; See page 8.600.1
Seal Kit: SK08-2X-T; See page 8.650.1
Coil Nut: Part No. 7004410;
For E-coils manufactured prior to 1-1-04, see page 3.400.1 for coil nut info.
SYMBOLS
USASI: ISO:
1.030.1
8.6/125
6.9/100
5.2/75
3.4/50
1.7/25
7.5
2
15.1
4
22.7
6
30.2
8
FLOW lpm/gpm
PRESSURE DROP bar/psi
37.9
10
to de-energized ——
to energized - - - -
32 cSt/150 sus oil at 40°C
PERFORMANCE (Cartridge Only)
SOLENOID VALVES
HYDRAFORCE
.com
®
Blue rectangles are links to other catalog pages.
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