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 5996-01-507-5742
NSN 6620-00-910-5464
NSN 5925-01-158-5008
NSN 6150-00-788-2981
NSN 6650-01-217-9304
NSN 5895-00-244-6750
NSN 5855-01-332-3011
NSN 6130-01-233-7885
NSN 5990-01-553-6859
NSN 6220-00-657-9795
NSN 2925-00-833-9466
NSN 5975-01-591-4935