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 5925-01-024-5495
NSN 4140-00-905-6570
NSN 5998-00-058-3020
NSN 6240-01-508-2848
NSN 5960-01-137-2329
NSN 6645-01-644-3850
NSN 5960-01-256-6956
NSN 4140-01-441-5165
NSN 6650-01-529-0151
NSN 6150-01-427-3764
NSN 6110-00-004-6937
NSN 6220-00-396-0039