DIRECT ACTING RELIEF VALVEMax Pressure: 5000 PSI (345 bar)
Rated Flow Rate: 2.5 gpm (9 l/min)
The HSLR is a flow adjustable relief valve used for pilot control relief, pressure reducing, sequence, or any other type of pressure control valve.
Inlet pressure (at port 1) passes thru a stability orifice in the center of the valve. When pressure of the exposed face of the poppet exceeds that of the adjustable spring tension, holding the poppet on the seat, the valve opens and allows flow from port 1 to 2. When the pressure drops, the poppet re-seats and flow stops.
HSLR relief valves are available with several orifice sizes and springs so you can tailor the valve to your needs. The cartridge valve is constructed of steel parts, and operating parts are hardened and ground as required. The cartridge is designed for ease of service or field repair. Available with tamper resistant or tamper proof adjusting screws.
For increased sensitivity, smoothness of operation, broadness of range, and ease of adjustment, many times it is advantageous to use a smaller pilot relief valve to operated a large pressure control valve.
The compound ASA symbols shown are for pilot operated pressure control valves. That is they show both the pilot valve and the larger pressure control valve.
HSLR relief valves are available with several pressure adjustors. The standard knob, tamper resistant option, tamper proof option, and internal adjustor option are shown as well.
|Rated Flow||2.5 gpm||9 l/min||2.5 gpm||9 l/min|
|Max Operating Pressure||5000 psi||345 bar||5000 psi||345 bar|
|Adjustable Pressure Range||7||50 to 700 psi||3 to 48 bar||50 to 700 psi||3 to 48 bar|
|20||50 to 2000 psi||3 to 138 bar||50 to 2000 psi||3 to 138 bar|
|35||50 to 3500 psi||3 to 241 bar||50 to 3500 psi||3 to 241 bar|
|50||50 to 5000 psi||3 to 345 bar||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|