Product Detail


Quick Overview


Mounting Surface: 800 Oilgear Standard Cavity

Max Pressure: 5000 PSI (345 bar)
Rated Flow Rate: 22 gpm (83 l/min)

The HSPR valve regulates and maintains reduced pressure (from the main hydraulic system) in a secondary circuit.

The outlet pressure (port 1) is transmitted thru an orifice in the center of the valve to the pilot relief valve (in the upper portion of the body). When the outlet pressure exceeds this valve setting, the pressure on the top side of the spool is relieved (thru port 3). A pressure imbalance then exists across the main spool. The main spool and sleeve tend to move and throttle or shut off flow between ports 2 and 1. If the pressure in the secondary system drops, the pilot valve re-seats. The main spool is again balanced, and the spring forces the main spool and sleeve downward and allows for flow again from port 2 to 1.

Several pressure ranges are available for this high accuracy pilot operated design.

The HSPR cartridge is constructed of steel parts, and all operating parts are hardened and ground as required. The cartridge is designed for easy service or field repair.

Rated Flow (Δ 100 psi/7 bar) 22 gpm 83 l/min
Max Operating Pressure 5000 psi 345 bar
Adjustable Pressure Range 07 50 to 700 psi 3 to 48 bar
20 50 to 2000 psi 3 to 138 bar
35 50 to 3500 psi 3 to 241 bar
50 50 to 5000 psi 3 to 345 bar
Viscosity Range 27 to 2000 SSU at 100 °F 1 to 432 cSt
Temperature Range -40 to +350 °F -40 to +175 °C

Product Specifications