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 5999-01-386-5780
NSN 4140-00-905-6039
NSN 5960-01-260-7430
NSN 6240-01-328-6352
NSN 5925-01-527-1636
NSN 6150-00-041-5038
NSN 5910-01-652-3822
NSN 5950-01-515-4939
NSN 6650-01-444-8313
NSN 5895-00-292-2872
NSN 5915-01-421-6253
NSN 6610-01-617-3357