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 5965-01-291-0384
NSN 5996-01-171-2132
NSN 6110-01-374-9933
NSN 5945-01-434-1438
NSN 5998-01-137-5438
NSN 5945-00-344-3255
NSN 2925-01-131-0473
NSN 5998-01-428-2827
NSN 5945-01-634-0588
NSN 6220-01-076-5057
NSN 6645-00-296-8310
NSN 5920-00-633-0404