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 4140-00-730-7815
NSN 5835-00-198-4936
NSN 5930-01-485-9912
NSN 6650-00-436-3531
NSN 5905-01-552-7709
NSN 6620-00-542-1579
NSN 6110-01-562-4717
NSN 6620-00-338-6482
NSN 6610-01-128-2428
NSN 5960-01-420-2372
NSN 5925-01-435-5869
NSN 6130-01-483-5141