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 6645-00-679-8203
NSN 6620-01-650-1808
NSN 6135-00-203-9645
NSN 5935-01-311-2688
NSN 5920-01-183-6197
NSN 5960-01-380-0885
NSN 5895-01-426-6860
NSN 5950-01-073-0078
NSN 5910-01-514-8164
NSN 5835-01-264-8782
NSN 5935-01-581-3707
NSN 6650-00-788-1461