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 6620-01-336-0331
NSN 5905-00-936-7437
NSN 6610-01-083-1446
NSN 5925-00-448-2543
NSN 7035-01-053-4769
NSN 5920-00-855-4262
NSN 5975-00-924-4985
NSN 5930-01-446-0194
NSN 6240-01-047-2786
NSN 5985-00-104-5981
NSN 5835-00-707-6266
NSN 6110-00-144-6763