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 6320-01-296-3181
NSN 6220-01-465-1888
NSN 6110-01-535-3758
NSN 6110-01-385-9337
NSN 5935-00-529-0319
NSN 5935-00-985-2159
NSN 5999-00-245-8219
NSN 6610-01-293-8156
NSN 5945-01-031-3006
NSN 5925-00-245-3391
NSN 6650-01-205-7626
NSN 5975-00-004-9431