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 5990-01-013-8464
NSN 5905-00-039-7172
NSN 5975-01-468-9570
NSN 6620-00-838-6954
NSN 5905-01-009-3576
NSN 5999-01-023-7783
NSN 6220-00-167-2154
NSN 6620-01-158-5111
NSN 6220-00-848-8857
NSN 6145-01-453-4004
NSN 5950-01-196-0814
NSN 6645-00-933-0529