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 5990-01-018-3953
NSN 2925-01-429-2235
NSN 6645-00-497-3495
NSN 2925-01-422-1542
NSN 5945-01-019-9097
NSN 6620-01-534-0898
NSN 6610-01-383-4458
NSN 6110-01-171-9752
NSN 6620-00-911-6747
NSN 6650-01-388-2538
NSN 5945-00-144-8073
NSN 5996-00-975-5432