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 5895-01-615-0260
NSN 5975-01-433-3938
NSN 5835-01-227-2318
NSN 5930-00-893-8236
NSN 6145-00-925-2004
NSN 6610-01-353-4883
NSN 6220-00-565-3888
NSN 6320-00-809-5744
NSN 5935-01-501-9801
NSN 6650-01-487-4949
NSN 2925-01-008-5696
NSN 6220-01-339-6018