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 6650-00-944-8925
NSN 2925-01-469-8229
NSN 6145-01-155-6692
NSN 6610-00-269-4506
NSN 5835-00-764-4388
NSN 5996-01-364-0884
NSN 2925-01-612-0405
NSN 5930-00-466-3534
NSN 5960-01-241-1844
NSN 6685-01-630-6234
NSN 5935-00-579-5638
NSN 6105-00-542-3666