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 6650-01-067-0132
NSN 5999-01-453-7798
NSN 6610-00-515-6462
NSN 5895-01-634-0630
NSN 6150-00-392-0317
NSN 6650-00-518-5194
NSN 6240-00-185-8367
NSN 5930-00-764-4687
NSN 6150-00-865-9011
NSN 6220-01-424-7986
NSN 6240-00-990-8290
NSN 5998-01-495-6632