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 5905-01-323-8737
NSN 5975-01-017-2738
NSN 5990-01-364-0813
NSN 6645-01-632-6263
NSN 6135-01-529-8523
NSN 5990-01-591-0701
NSN 5960-01-456-1735
NSN 5945-01-462-5903
NSN 5925-01-441-9316
NSN 6645-01-360-0293
NSN 6150-01-030-4082
NSN 5960-00-349-7650