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 5990-01-107-8682
NSN 6320-00-004-9158
NSN 5996-01-370-5570
NSN 6150-01-216-9983
NSN 6145-01-417-9630
NSN 5935-01-513-6160
NSN 5895-01-427-3727
NSN 6135-00-112-8637
NSN 7035-00-981-7216
NSN 5855-01-180-5369
NSN 5915-00-831-6143
NSN 6220-01-631-4422