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 5965-01-343-6983
NSN 6145-01-028-6299
NSN 5935-01-381-2717
NSN 5960-01-380-9692
NSN 5975-01-010-2953
NSN 5930-00-155-8741
NSN 5975-01-013-4140
NSN 6135-01-174-3807
NSN 5950-00-579-1354
NSN 4140-01-486-4727
NSN 5930-00-203-0321
NSN 5855-01-630-5790