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 5925-01-304-6755
NSN 5920-00-710-2781
NSN 5920-01-057-4990
NSN 6620-01-435-7083
NSN 6110-01-415-2326
NSN 5895-01-384-3736
NSN 5935-01-290-3851
NSN 5996-00-212-8004
NSN 5905-01-282-1510
NSN 5905-01-027-6924
NSN 5855-00-281-3843
NSN 5998-01-310-3844