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 5925-00-327-1984
NSN 6645-00-619-8102
NSN 6110-01-478-0359
NSN 6135-01-548-1423
NSN 5998-01-416-7368
NSN 5999-01-429-6888
NSN 6610-01-489-0071
NSN 5935-01-475-6391
NSN 5835-00-946-2656
NSN 5930-01-251-4441
NSN 5945-01-329-6179
NSN 6105-00-862-4951