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 5935-01-117-6377
NSN 5945-01-123-7966
NSN 4140-01-574-9229
NSN 6105-01-093-0102
NSN 5975-01-425-7513
NSN 6620-00-004-5466
NSN 5998-00-412-2730
NSN 5999-01-523-3377
NSN 5990-00-240-3135
NSN 5920-01-020-1744
NSN 5925-01-064-9884
NSN 5950-00-269-2698