Eaton leads the industry in screw-in cartridge valve (SiCV) technology with a wide selection of hydraulic valves for both stationary and mobile equipment. This product line includes pressure, flow, proportional and logic element screw-in cartridge valves and hydraulic integrated circuits.

This is a pilot operated screw in cartridge pressure reducing / relieving valve. The valve  maintains a constant outlet pressure in hydraulic sub-systems regardless of fluctuations  in the primary system. In addition to this it will act as a relief valve if the pressure in the  sub-system rises higher than the setting of the valve directing excess fluid to tank.

Operation
This valve is normally open allowing inlet oil to pass to the regulated line until the outlet (regulated) pressure exceeds the setting of the pilot section. When this setting is achieved a pilot flow occurs, causing a pressure imbalance across the main spool, which then  moves throttling the inlet flow and preventing any further pressure rise in the regulated line. If any external force causes the regulated pressure to rise more than 5-10% above the setting, the main spool moves back further, opening the regulated port to the tank line, thus working as a relief valve.
Features
Cartridge construction with hardened, ground and honed working parts giving smooth, stable operation over all pressure ranges.

Specifications:
Performance data is typical with fluid at 21,8 cSt (105 SUS) and 49°C (120°F)
Typical application pressure (all ports): 240 bar (3500 psi)
Cartridge fatigue pressure (infinite life): 210 bar (3000 psi)
Rated flow: 28 L/min (10 USgpm)
Cavity: C-10-3
Temperature Range: -40°C to +120°C (-40° to + 248°F)
Fluids: All general purpose hydraulic fluids such as MIL-H-5606, SAE 10, SAE 20, etc.
Filtration Cleanliness code: 18/16/13
Standard housing materials: Aluminum Or Steel
Weight: 0.24 kg (0.54 lbs)
Seal kits: 565804 (Buna-N) / 889599 (Viton)

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