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 6685-01-128-3052
NSN 6130-01-542-0025
NSN 5930-01-132-8922
NSN 6620-01-384-2105
NSN 6650-00-056-1581
NSN 5835-01-344-2857
NSN 6650-01-569-0004
NSN 5910-00-054-9548
NSN 5930-01-573-3977
NSN 6110-00-902-3727
NSN 5950-00-529-0599
NSN 5855-00-400-2622