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 6685-00-148-9729
NSN 5910-01-599-5368
NSN 6650-00-161-4122
NSN 5935-01-228-7515
NSN 5925-01-267-4587
NSN 5990-00-241-1301
NSN 5990-01-633-9503
NSN 6110-01-138-5626
NSN 6145-00-682-3484
NSN 6110-00-596-9124
NSN 5915-01-556-4282
NSN 6320-00-036-3688