These check valves' robust design provides for longer and enhanced performance with operating pressures from 0 to 10,000 psig with zero leakage. They are offered in sizes from 1/8 in. to 2.0 in., in a wide variety of connections, for both gases and liquids. Standard materials available include aluminum, brass, carbon steel, 303 and 316 stainless steel bodies, and Buna N, ethylene propylene, fluorosilicone, neoprene, Teflon®, and Viton® o-rings. The check valves can be used in a variety of gas and liquid OEM applications.