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 5996-01-633-7979
NSN 5915-01-256-5149
NSN 5835-01-460-6054
NSN 2925-00-596-9775
NSN 2925-00-054-3550
NSN 6130-01-512-3228
NSN 6130-01-160-6130
NSN 6650-00-045-8355
NSN 5960-00-104-5955
NSN 6685-00-058-9526
NSN 6150-01-459-4665
NSN 2925-00-620-7757