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 6610-00-851-8727
NSN 6610-01-453-9295
NSN 5930-01-196-5174
NSN 5835-00-931-5568
NSN 5960-00-297-7099
NSN 6110-01-494-3003
NSN 7035-00-179-3924
NSN 5998-00-924-0694
NSN 5855-00-763-2155
NSN 6650-01-025-7425
NSN 5895-01-542-8436
NSN 5835-01-398-3859