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 5999-00-698-3990
NSN 6240-01-158-9299
NSN 6130-01-171-3275
NSN 5895-01-024-8977
NSN 5990-00-350-2352
NSN 6150-01-658-4533
NSN 2925-01-239-6044
NSN 6130-01-252-1170
NSN 5915-01-659-1169
NSN 5925-01-311-5322
NSN 5855-01-471-3162
NSN 5895-01-533-5455