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A solenoid-operated, 2-way, normally open, poppet-type, screw-in hydraulic cartridge valve, designed to function as a load holding or blocking valve in applications requiring low internal leakage.
When energized, the SV12-21 acts as a check valve, allowing flow to pass from 1 to 2, while blocking flow in the reverse direction.
When de-energized, the poppet lifts to open the 2 to 1 flow path after overcoming the solenoid force (requires 3.4 to 10.3 bar / 50 to 150 psi). In this mode, flow from 1 to 2 is severely restricted. If this path is required, see model SV12-23, page 1.054.1.
Operation of Manual Override Option: To override, push and hold override button.
• Continuous-duty rated solenoid.• Hardened seat for long life and low leakage.• Optional coil voltages and terminations.• Efficient wet-armature construction.• Cartridges are voltage interchangeable.• Unitized, molded coil design.• Manual override option.
• Optional waterproof E-Coils rated up to IP69K.• Cost effective cavity.
Operating Pressure: 240 bar (3500 psi)
Flow: Up to 114 lpm (30 gpm); see performance chart
Internal Leakage: 0.15 cc/minute (3 drops/minute) max. at 240 bar (3500 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 flow rating:
Energized: 110 msec.; De-energized: 40 msec.
Initial Coil Current Draw at 20°C: Standard Coil: 1.67 amps at 12 VDC; 0.18 amps at 115 VAC (full wave rectified). E-Coil: 1.7 amps at 12 VDC; 0.85 amps at 24 VDC
Minimum Pull-in Voltage: 85% of nominal at 240 bar (3500 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: VC12-2; See page 9.112.1
Cavity Tool: CT12-2XX; See page 8.600.1
Seal Kit: SK12-2X-T; See page 8.650.1
Coil Nut: Part No. 7004420; For E-coils manufactured prior to 1-1-04, see page 3.400.1 for coil nut info.