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 5998-01-574-0990
NSN 5998-00-514-8643
NSN 5925-01-451-0518
NSN 6105-01-518-1971
NSN 5910-01-345-3841
NSN 5935-01-515-7668
NSN 5985-01-112-0180
NSN 5905-01-645-7727
NSN 5985-00-922-7715
NSN 6135-01-400-2947
NSN 4140-00-511-6652
NSN 6110-00-144-3159