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 5905-00-793-7252
NSN 5915-01-525-7731
NSN 5998-00-808-8983
NSN 5999-00-824-3691
NSN 6620-01-297-5576
NSN 5990-01-414-7618
NSN 5965-01-477-1030
NSN 6610-00-186-9180
NSN 6650-01-112-0453
NSN 6105-01-126-2559
NSN 6320-00-295-2854
NSN 5855-01-083-9053