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 6240-01-130-7854
NSN 6145-01-322-6513
NSN 5925-01-278-8509
NSN 5945-01-620-2424
NSN 5855-00-198-3197
NSN 6320-01-390-5385
NSN 5945-01-605-1480
NSN 5855-00-107-7993
NSN 5960-01-023-8037
NSN 5895-00-965-8983
NSN 5930-01-537-0541
NSN 6650-01-146-5000