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 4140-01-051-0421
NSN 5960-01-281-1326
NSN 7035-01-296-4737
NSN 6130-00-216-0281
NSN 5915-00-269-2748
NSN 6220-01-386-3082
NSN 5925-01-616-2554
NSN 5945-01-032-6282
NSN 5835-01-038-1191
NSN 5985-01-492-7955
NSN 5998-01-117-7092
NSN 5965-01-425-2039