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 6145-00-889-1492
NSN 5835-01-370-4292
NSN 5999-01-115-5362
NSN 6620-01-141-5747
NSN 5910-01-592-2746
NSN 6240-00-344-8582
NSN 5965-00-007-7863
NSN 4140-01-466-1330
NSN 5905-00-882-5877
NSN 5950-01-116-8433
NSN 6620-00-338-6482
NSN 5996-01-180-5834