COHA Hydraulic Pilot-to-close Check Valve
This valve is a spring biased closed, pilot-to-close check cartridge that has a 1.8:1 pilot ratio.
Pressure at ① overcomers the spring-bias poppet and allows free flow ① to ②; Flow in the opposite direction from ② to ① is blocked by the poppet.
When the required pilot pressure is achieved at ③, the poppet is held closed to block flow between ① and ②. The pilot piston area to poppet seat area ratio is 1.8:1.
Max. Operating Pressure: 350 bar (5000 psi)
Flow: see performance chart
Internal Leakage: 2drops/min max. at 350bar (5000 psi)
Pilot Ratio: 1.8:1
Temperature: - 30°C to 100°C (with Standard Buna N seals)
Filtration: 25μm or better
Cavity: SUN T-17A
Installation Torque: 200-215Nm
AAK Hydraulic Valve is a top manufacturer for Hydraulic Pilot-to-Close Check Valves in Ningbo China since 2009.
We guarantee quality for 3 years for non-standard customized valves: No leakage, No Noise, No Vibration.
Contact us to customize your valves and promote your business with our premium quality!