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 5990-00-847-1164
NSN 6130-01-311-8185
NSN 5960-00-269-4762
NSN 5855-01-437-6161
NSN 5998-00-851-6456
NSN 5895-01-459-5386
NSN 5999-00-321-0635
NSN 6110-01-437-0081
NSN 5985-00-584-3795
NSN 5960-00-551-2633
NSN 6645-01-233-1131
NSN 5835-00-419-0575