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 5990-01-539-4653
NSN 5985-00-195-9425
NSN 5999-00-603-6968
NSN 6685-00-104-7149
NSN 6685-01-048-6411
NSN 5905-01-047-5173
NSN 5999-01-492-2372
NSN 5935-01-086-5748
NSN 2925-00-795-4063
NSN 6320-01-116-3980
NSN 6650-00-134-5130
NSN 4140-01-342-1345