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 6145-00-493-4073
NSN 5915-01-016-6341
NSN 5925-00-450-6372
NSN 5910-01-096-1942
NSN 5999-01-356-0470
NSN 2925-01-159-0506
NSN 5935-01-121-3971
NSN 5925-01-513-8081
NSN 5910-00-971-1710
NSN 5855-01-175-3990
NSN 5965-00-791-0964
NSN 5935-01-633-5263