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 5925-01-431-7057
NSN 5990-01-429-6211
NSN 6620-01-160-0439
NSN 5945-00-664-6668
NSN 5915-01-188-4350
NSN 5999-01-146-9153
NSN 6220-01-419-1932
NSN 5990-01-463-2279
NSN 5905-01-171-7749
NSN 4140-01-358-5141
NSN 6150-01-350-7025
NSN 6645-00-287-9192