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 4140-00-720-4993
NSN 5905-00-539-5000
NSN 5990-00-728-8248
NSN 5996-01-394-2548
NSN 6320-00-937-5625
NSN 5990-01-539-3683
NSN 6135-01-482-1290
NSN 5960-00-628-2003
NSN 5990-00-054-4785
NSN 6240-01-219-9358
NSN 5985-00-880-5788
NSN 6135-01-183-8993