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 6685-01-648-0417
NSN 5999-01-483-0737
NSN 5990-01-300-7801
NSN 6145-01-408-7156
NSN 2925-01-222-7764
NSN 5920-01-276-2282
NSN 5998-00-383-6191
NSN 4140-00-411-2619
NSN 5998-00-995-6275
NSN 6145-00-369-3880
NSN 5965-01-532-1198
NSN 7035-00-470-4977