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 4140-01-621-8556
NSN 6130-01-525-7679
NSN 5930-00-440-3628
NSN 6685-01-055-0823
NSN 5910-01-352-6700
NSN 6145-01-150-6018
NSN 6220-01-089-0886
NSN 5990-01-395-4194
NSN 5935-01-410-7666
NSN 5930-01-522-7339
NSN 6105-01-108-7073
NSN 2925-01-625-6841