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 5999-01-276-6106
NSN 5910-01-562-1891
NSN 5990-00-428-1895
NSN 5905-01-313-4802
NSN 6150-00-719-6119
NSN 6645-01-304-0889
NSN 6145-01-386-3976
NSN 6130-00-596-7111
NSN 5975-00-340-3933
NSN 5998-00-016-9292
NSN 5996-01-487-6249
NSN 6145-01-064-4171