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 6130-01-642-1935
NSN 6685-01-529-6504
NSN 5935-01-596-6514
NSN 5999-00-142-5831
NSN 6650-01-657-7864
NSN 5910-01-467-1324
NSN 5915-01-146-3629
NSN 6105-00-202-2469
NSN 5935-00-378-0003
NSN 5905-01-184-7934
NSN 5920-00-455-9743
NSN 5930-01-465-4253