Product Detail


Quick Overview


Mounting Surface: 800 Oilgear Standard Cavity

Mas Pressure: 5000 PSI (345 bar)
Rated Flow Rate: 4 gpm (15 l/min)

The HSUCO valve is primarily a pilot valve used to control large flow HSU, HSUO, or HSP valves.

Pilot pressures must be connected to port 1 to operate the integral relief valve to connect port 2 to 3 or port 4 to 3. Port 1 pressure is ported thru orifices in the center of the valve to the pilot relief valve (in the upper portion of the body). When the pressure exceeds this valve setting, pressure on the top side of the main spool is relieved. A pressure imbalance then exists across the main spool, and the port 1 pressure raises the main spool, blocking port 2 and allowing floe from port 4 to 3. When the pilot pressure (port 1) decreases, the pilot relief valve blocks flow. Pressure across the main spool is balanced, and the spring returns the main spool to block port 4 and connect port 2 to 3 again.

Several pressure ranges are available to choose from. The cartridge is constructed of steel parts, and 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) 4 gpm 15 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