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 5965-01-239-4034
NSN 6130-01-071-0796
NSN 6650-01-052-2143
NSN 5855-01-457-2953
NSN 5975-00-682-4391
NSN 6105-00-399-0303
NSN 6685-00-096-1485
NSN 6130-01-565-7880
NSN 5975-01-388-0602
NSN 5960-01-586-5235
NSN 6220-01-573-7639
NSN 6240-01-466-4718