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 5920-01-162-6172
NSN 5998-00-787-4044
NSN 5990-01-188-7309
NSN 6650-00-122-1109
NSN 6130-01-042-4949
NSN 5990-01-348-9843
NSN 6110-00-859-9942
NSN 5965-00-973-9974
NSN 6610-00-367-9603
NSN 6650-01-551-4124
NSN 6610-00-781-5787
NSN 5910-00-102-9162