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 5990-00-975-1055
NSN 6130-01-609-8758
NSN 5960-01-624-1170
NSN 5895-01-012-7085
NSN 6645-00-456-2923
NSN 6240-00-353-5753
NSN 6220-00-503-2831
NSN 6130-01-250-1274
NSN 6110-01-534-6435
NSN 5855-00-327-2112
NSN 6320-01-278-9832
NSN 6130-01-207-1879