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 6240-01-480-8996
NSN 6620-01-047-5831
NSN 7035-01-509-1959
NSN 5930-01-186-4687
NSN 5895-00-327-8805
NSN 6135-00-862-5736
NSN 5960-01-443-3067
NSN 6620-00-290-6505
NSN 5960-01-381-8475
NSN 5990-01-423-8189
NSN 5975-01-048-9301
NSN 6150-01-370-3607