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 5915-00-082-4838
NSN 5855-00-256-5562
NSN 6150-01-375-2261
NSN 6610-01-415-0061
NSN 5935-01-011-2223
NSN 6610-01-576-7079
NSN 5985-01-614-0379
NSN 6220-01-421-0352
NSN 5905-01-154-6131
NSN 5935-00-150-0512
NSN 6320-01-449-1014
NSN 6650-01-122-0169