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 6620-00-022-8056
NSN 5985-01-569-1459
NSN 5920-01-475-7715
NSN 6620-00-292-7000
NSN 6240-01-327-4945
NSN 5925-01-129-8810
NSN 5975-01-062-2987
NSN 2925-01-345-9439
NSN 5999-01-579-9977
NSN 5965-00-156-8562
NSN 2925-00-101-7972
NSN 5935-01-463-8543