Spring check valve HPC10

cartridgepistonscrew-in

A screw-in, cartridge type, pilot-operated hydraulic check valve, which can be applied for unidirectional blocking or load holding circuits. HPC10 allows flow from ② to ③, while blocking flow from the opposite direction. When the sufficient pressure is applied at ①, the fluid can flow from ③ to ②. The pilot ratio for this type of valve is 3:1, which means that the valve cannot be opened until at least 1/3 of the load pressure of ③ is applied at ① . Under the static or no-load conditions, the valve is spring-biased to assure holding. A sealed pilot piston optional is available. Provide customized based-spring. Please contact customer service. Flow: see performance chart. Internal leakage：　 ③ to ②: max. 0.25mL/min (5 drops/min) iat 250bar (3600psi) ② to①: max. 115mL/min (7cu.in./min) at 350bar(5000 psi) (without sealed piston) ② to ①: no leakage (without sealed piston) Pilot ratio：3:1 pilot ratio: Check spring bias: Standard: 1 bar (14.5 psi); with sealed piston: min. 3.5 bar （51 psi) Cracking pressure：1 bar (14.5 psi） 3.5 bar（51 psi） 14.5 bar ( 203 psi) Filtration: max nominal value: 10μm（NAS 8），ISO4406 19/17/14 Fluid: Mineral based or synthetics with lubricating properties at viscosities of 7.4~420 cSt (50-2000 ssu) Installation: no restriction. Cavity：VC10-3 ； Cavity tool：T/H10-3RC-T-G（粗加工） ； T/H10-3FM-T-G（精加工） Seal kit：SK10-3X-TM