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 6650-01-424-1545
NSN 6650-01-397-8856
NSN 5835-01-074-1161
NSN 5835-00-830-6416
NSN 5950-00-631-4736
NSN 6135-00-840-6451
NSN 5905-01-501-1527
NSN 5950-01-447-8162
NSN 5925-00-450-6372
NSN 5930-01-368-1779
NSN 5950-01-575-7748
NSN 6620-00-583-2687