Hydraulically Pilot Operated Check Valve Series SVLB

Parker's hydraulically pilot operated check valve series SVLB in cartridge design are used to shut-off the cylinder. It allows free flow from A to B. The counter-flow direction is blocked. When pressure is applied to control port X, the ring chamber flow from B to A is released.

Features
• Pilot operated check valve
• 5 sizes, NG16 to NG50
• Cavity and mounting pattern acc. to ISO 7368
• Nominal flow up to 1800 l/min
• Pilot control ratio is 6:1
• Optionally with dampening poppet

Benefits
• Reliable cylinder shut-off
• Short delivery times

Function
When no pressure is applied to the X-port, the flow from B to A is blocked, because the pressure in B is also effective on top of the poppet. Pressurizing the X-port relieves the area on top of the poppet to the drain port and allows flow from B to A. The seat design of the SVLB valve series provides leakfree separation of port A and B in the closed position.