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 5905-00-149-0677
NSN 5935-01-149-5821
NSN 7035-01-433-3547
NSN 5910-00-940-7395
NSN 5975-01-582-4153
NSN 6130-01-526-7079
NSN 5925-00-177-4654
NSN 6105-01-553-5077
NSN 6130-01-195-6510
NSN 6220-00-144-8043
NSN 5925-01-421-4276
NSN 4140-01-090-3866