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 2925-01-197-7864
NSN 6685-01-204-8110
NSN 5905-01-470-9647
NSN 5935-00-248-4734
NSN 6110-00-238-9636
NSN 5930-00-707-5696
NSN 5935-01-482-9733
NSN 6620-01-129-1260
NSN 4140-01-495-0865
NSN 5998-01-456-8454
NSN 6220-01-051-6993
NSN 5999-01-609-2667