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 5999-01-116-2638
NSN 6685-01-500-8158
NSN 6135-00-161-0746
NSN 5835-01-495-0595
NSN 5915-01-008-1988
NSN 7035-00-631-3782
NSN 4140-00-368-4261
NSN 5895-01-440-9605
NSN 6240-01-380-2127
NSN 5950-00-104-7526
NSN 5910-01-323-6098
NSN 5965-00-281-0319