BIS Valves Type C25 Check Valve, 1/4 inch MWP: 9,000 psi (liquid), 3,500 psi (gas) Connections: 1/4 inch NPT female ports Opening pressure: 2-5 psi OperatingTemp: -10 to +120 deg.C Viton seals, 316SS
BIS Valves Type C50 Check Valve, 9,000 psi max WP-liquid, (3,500 psi max WP-Gas), cracking pressure 2-5 psi, 1/2 inch NPT ports, viton o-rings, 316SS with standard certification
Colson CCVHX series poppet check valve, 3/4 inch NPT female, 10,000 psi, 316SS *Obsolete, cannot get 1 inh NPT in 10K
Parker Hi-Check series 1/4 inch check valve, 1/4 inch NPT female, 10,000 psi, 316SS. Flurocarbon seals
