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 6320-00-643-0958
NSN 5915-01-553-0710
NSN 6620-00-006-6418
NSN 6320-01-322-4950
NSN 6130-00-523-7885
NSN 5950-01-094-1351
NSN 5925-01-024-5495
NSN 4140-01-281-1615
NSN 5998-01-363-7229
NSN 5930-01-042-5509
NSN 6650-00-754-2276
NSN 5895-00-837-2343