pilot operated relief valve

JRP10-01 is a pilot operated, spool type, pressure relief valve.When the set operating pressure is reached, the poppet spool opens and connects the protected line with the return line to the tank. By means of the adjusting mechanism, the poppet spool is pressed onto a seat which is screwed into the lower cartridge opening by a helical spring. The poppet spool is opened and closed hydraulically dampened. This makes the operation of this cartridge very stable. Thanks to the poppet/spool principle and the direct operation, these Pilot Operated Relief Valve are rapid acting and free of leakage oil. The reduced diameter of the seat produces a higher pressure drop and a lower flow throughput performance than Pilot Operated Relief Valve of the same size.