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 6110-01-003-9614
NSN 5935-01-593-9383
NSN 6135-01-391-6515
NSN 4140-00-269-5795
NSN 7035-00-679-9027
NSN 5975-00-823-0979
NSN 7035-01-400-3666
NSN 5910-00-834-7162
NSN 5990-01-233-8138
NSN 6620-01-395-5214
NSN 6645-01-359-1487
NSN 5925-00-154-0372