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 5996-01-400-3558
NSN 5835-01-495-0595
NSN 5945-00-521-3896
NSN 5925-01-160-7609
NSN 5960-01-449-1310
NSN 5945-01-005-0328
NSN 6110-01-484-4528
NSN 5855-01-544-7588
NSN 4140-01-374-2210
NSN 6645-01-583-8153
NSN 5996-00-004-3562
NSN 5999-01-598-6987