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 5920-01-381-0514
NSN 5915-01-570-1782
NSN 6150-00-499-9716
NSN 6105-01-436-8571
NSN 5990-01-458-6789
NSN 6130-01-073-0652
NSN 6105-01-220-5963
NSN 5925-00-241-9774
NSN 7035-01-641-8246
NSN 6130-01-173-2651
NSN 5998-01-030-8634
NSN 5999-01-074-3984