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 5998-00-970-9133
NSN 5915-01-649-7805
NSN 5999-00-248-7240
NSN 5965-00-757-3403
NSN 5855-01-562-3132
NSN 6650-00-520-4253
NSN 6610-01-400-3880
NSN 5999-00-411-9498
NSN 6110-01-264-9933
NSN 6645-00-114-2678
NSN 5925-01-276-7059
NSN 4140-01-163-1557