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 6240-01-115-4549
NSN 5990-00-646-5487
NSN 5950-01-197-8480
NSN 6135-00-274-4035
NSN 6220-01-141-8200
NSN 5975-01-375-5345
NSN 5855-01-516-3795
NSN 5855-01-566-2706
NSN 5915-01-385-4318
NSN 6150-01-572-4490
NSN 7035-01-633-9537
NSN 5999-01-196-5433