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 4140-00-365-2531
NSN 5990-01-183-6478
NSN 5920-01-020-7659
NSN 6130-01-514-0108
NSN 6610-00-200-8832
NSN 5998-00-883-1629
NSN 6110-00-422-2897
NSN 5920-01-462-0055
NSN 5999-00-293-9788
NSN 6610-00-225-9886
NSN 5905-01-574-1648
NSN 5855-00-878-8137