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 5990-01-277-2118
NSN 6620-00-608-1480
NSN 6130-01-242-1588
NSN 5998-00-975-1097
NSN 6645-01-344-1992
NSN 6130-01-118-5917
NSN 6130-00-867-1431
NSN 6220-00-503-2831
NSN 5999-00-158-5118
NSN 6645-01-599-2311
NSN 5960-01-439-9517
NSN 6135-01-384-3915