Check valves, figure 2.29, are two-port valves—one for fluid to enter and the other for fluid to leave.normally, the check valve closes under the action of the spring force on the left. when the fluid flows from right to left and the fluid pressure is greater than the cracking pressures, the spool moves off of its seat and opens the valve.
Shop parker industrial hydraulic cartridge valves. flow, check, solenoid and pressure control type cartridge valves. ... (see catalog for flow paths) normally closed normally closedfree reverse flow normally closedfull reverse flow (fast response) normally closedmetered reverse flow normally closed ... view variants » cph104p pilot ...
Rv10-28 relief, pilot-operated w/reverse check description a screw-in, cartridge-style, pilot-operated, two-stage, hydraulic relief valve with reverse flow check valve. it is intended for use as a pressure limiting device in demanding hydraulic circuits which require fast
This valve is a spring biased closed, pilot-to-close check cartridge that has a 1.8:1 pilot ratio. the valve allows flow from port 1 to port 2 and blocks reverse flow. pressure at the pilot port opposes pressure at port 1 at a ratio of 1.8:1. this valve is most often used in regeneration circuits. nominal pilot