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 5998-00-535-4434
NSN 4140-01-386-4806
NSN 5915-01-152-1907
NSN 5990-00-941-5989
NSN 5925-00-724-9811
NSN 5915-00-824-4088
NSN 5985-01-381-9007
NSN 5855-00-494-9581
NSN 6130-00-316-4050
NSN 5915-00-130-1796
NSN 5930-01-604-9646
NSN 5855-00-631-4565