High Pressure - Pressures to 60,000 psi (4140 bar)
Provide unidirectional flow and tight shut-off for liquids and gases with high reliability. When differential drops below cracking pressure*, valve shuts off. (Not for use as relief valve.)
Cracking Pressure*: 20 psi (1.38 bar) ±30%. Springs for higher cracking pressures up to 100 psi available on special order for O-ring style check valves only.
Temperature Range/O-ring Options:
Viton (FKM) O-ring (std.): 0° to 400°F (-18° to 204°C) Buna-N O-ring (-BO suffix): -20° to 250°F (-29° to 121°C) FFKM O-ring (-KO suffix): 30° to 500°F *(-18° to 260°C) PTFE O-ring (-TO suffix): -100° to 400°F (-73° to 204°C) PTFE O-ring with Low Temp Spring (-LTTO suffix): to -423°F (-252°C)