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 5998-01-297-6844
NSN 5925-01-630-9832
NSN 6110-00-196-8813
NSN 5925-01-355-6523
NSN 5965-01-428-1673
NSN 5925-01-166-4051
NSN 5960-00-780-1927
NSN 6220-01-634-0660
NSN 5925-01-254-2578
NSN 5996-01-141-6916
NSN 5920-01-025-6989
NSN 4140-00-111-3247