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 5915-01-466-3173
NSN 5835-01-116-2369
NSN 6610-00-867-6403
NSN 6685-00-369-0279
NSN 5945-00-791-5838
NSN 5895-01-322-5563
NSN 5855-01-203-4719
NSN 5835-01-580-7543
NSN 5990-01-110-8979
NSN 6130-01-483-7898
NSN 6620-00-635-2417
NSN 5835-00-061-5717