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 5915-01-441-2238
NSN 5925-01-500-5407
NSN 5950-01-599-1682
NSN 5910-00-923-1941
NSN 4140-01-123-8801
NSN 5960-00-887-0631
NSN 6135-01-116-3385
NSN 6320-01-412-2973
NSN 5920-01-133-3546
NSN 6240-00-471-5399
NSN 6145-01-401-3713
NSN 5915-01-326-1470