A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.
NSN 5990-01-351-4621
NSN 5998-00-603-5533
NSN 5925-00-979-5856
NSN 5910-01-632-8791
NSN 6220-01-553-3534
NSN 5990-01-414-7618
NSN 5920-00-153-6941
NSN 6610-01-546-9693
NSN 6320-01-198-4024
NSN 6620-00-237-9395
NSN 5996-00-212-8004
NSN 5998-00-336-2396