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 6650-00-569-1762
NSN 5905-01-650-8390
NSN 6610-00-458-5444
NSN 5910-01-646-4011
NSN 6650-00-778-2949
NSN 6645-01-101-4959
NSN 5999-00-475-9846
NSN 5998-01-493-5623
NSN 5930-01-437-5891
NSN 5990-01-258-3848
NSN 5905-01-576-1661
NSN 5930-00-782-1983