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 6150-01-485-2322
NSN 6240-00-197-6819
NSN 6320-01-420-0340
NSN 6220-01-044-5552
NSN 6620-01-338-2995
NSN 5935-00-333-6169
NSN 6220-01-633-6592
NSN 5910-00-938-7626
NSN 7035-01-487-6481
NSN 2925-01-262-1418
NSN 6620-01-204-2915
NSN 6645-01-023-8020