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 6150-00-691-1705
NSN 6130-00-315-1181
NSN 6610-01-445-7120
NSN 6105-00-592-2887
NSN 5999-00-837-2587
NSN 6150-01-521-8504
NSN 5975-01-559-5824
NSN 5910-01-337-3588
NSN 6650-01-353-9299
NSN 5855-00-494-9581
NSN 5910-00-468-5229
NSN 6610-00-906-5723