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 6620-01-641-4122
NSN 6220-00-276-8681
NSN 5960-01-504-3415
NSN 6320-00-405-2348
NSN 7035-01-444-4240
NSN 6150-01-614-5336
NSN 2925-01-633-4048
NSN 6135-01-090-5365
NSN 6650-00-107-8509
NSN 5910-00-184-8249
NSN 5930-00-687-2288
NSN 6110-01-392-0498