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 5999-01-104-4056
NSN 5835-00-308-4929
NSN 6135-00-412-1687
NSN 5985-01-101-6297
NSN 6150-01-206-9149
NSN 6145-00-411-0813
NSN 6620-01-052-2773
NSN 4140-00-937-8117
NSN 6110-01-175-3166
NSN 5965-00-886-8511
NSN 5985-00-212-7690
NSN 6105-01-339-5387