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 5999-01-616-5756
NSN 5945-01-523-6291
NSN 5999-00-594-9180
NSN 6110-00-518-2998
NSN 5905-01-474-5173
NSN 2925-00-961-2117
NSN 5950-00-422-8579
NSN 7035-01-088-6415
NSN 6610-01-504-1276
NSN 2925-01-027-1293
NSN 5998-01-582-8283
NSN 6610-01-468-3025