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 5920-01-167-5884
NSN 5930-00-481-6258
NSN 4140-01-232-0537
NSN 5925-01-268-1825
NSN 5985-00-428-1379
NSN 5925-01-357-5560
NSN 5996-01-591-8882
NSN 5895-00-837-3441
NSN 6620-00-082-1525
NSN 7035-01-068-1096
NSN 5910-01-508-6110
NSN 5930-01-125-9165