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 5905-00-127-3494
NSN 6145-00-252-1899
NSN 5920-01-030-3611
NSN 5935-01-093-5076
NSN 5996-01-589-4840
NSN 4140-00-710-5660
NSN 6130-01-288-5467
NSN 5960-01-425-1454
NSN 5998-01-300-0638
NSN 5835-00-503-2608
NSN 6150-01-631-4933
NSN 6620-00-343-8229