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 6145-01-561-1232
NSN 6650-01-644-1672
NSN 5920-01-269-3047
NSN 7035-01-501-5549
NSN 6130-01-624-4352
NSN 6150-01-340-3050
NSN 6150-00-011-8938
NSN 5950-01-084-6667
NSN 5930-01-090-5291
NSN 6220-01-634-0660
NSN 6620-00-781-9617
NSN 2925-01-151-6969