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Solenoid-Operated On/Off Valve
SV20-28 — Bi-Directional Blocking, Poppet, 2-Way, Normally Closed
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A solenoid-operated, 2-way, normally closed, internally piloted,
poppet-type, screw-in hydraulic cartridge valve, for bi-directional
blocking or load-holding in applications requiring low internal leakage.
When de-energized, the SV20-28 blocks flow in both directions.
When energized, the valve’s poppet opens to allow bi-directional flow.
• Continuous-duty rated coil.
• 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.
• Waterproof E-Coils rated up to IP69K.
• Cost-effective cavity.
Operating Pressure: 207 bar (3000 psi)
Flow: Up to 303 lpm (80 gpm)
Internal Leakage: 0.25 cc/minute (5 drops/minute) max. at 207 bar (3000 psi)
Temperature: -40 to 100 °C (-40° to 212°F) with standard Buna seals;
-26 to 204 °C (-15 to 400°F) with Fluorocarbon seals
Coil Duty Rating: Continuous from 85% to 115% of nominal voltage
Initial Coil Current Draw at 20 °C: E-Coil: 2.6 A at 12 VDC; 1.3 A at 24 VDC
Minimum Pull-in Voltage: See performance chart
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: VC20-2; See page 9.120.1_2w
Cavity Tool: CT20-2xx; See page 8.600.1
Seal Kit: SK20-2x-M; See page 8.650.1
E-Coil Nut: Part No. 7085180
Cartridge: Weight: 0.65 kg (1.43 lb); Steel with hardened work surfaces. Zinc-plated exposed surfaces; Buna N O‑rings and polyester elastomer back-up standard.
Standard Ported Body: Weight: 1.71 kg (3.8 lb); Anodized high-strength 6061 T6 aluminum alloy, rated to 207 bar (3000 psi); Ductile iron bodies available; dimensions may differ.
See page 8.020.1_2w.
E-Coil: Weight: 1.36 kg (3.0 lb); Fully encapsulated with rugged external metal shell; Rated up to IP69K with integral connectors.
See page 3.400.1_12-size.
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