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 5910-01-556-0538
NSN 6130-01-400-6123
NSN 5935-01-147-5432
NSN 5996-01-029-9669
NSN 6685-00-467-6096
NSN 5996-01-100-4361
NSN 5950-01-339-3911
NSN 5915-01-063-5908
NSN 5915-00-255-6162
NSN 5930-01-143-6278
NSN 6620-01-596-3642
NSN 4140-01-359-2643