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 5920-00-223-2409
NSN 5895-01-373-2303
NSN 6110-01-481-1994
NSN 5990-01-400-3299
NSN 6685-00-019-6436
NSN 5915-00-731-1748
NSN 5905-00-339-3761
NSN 5999-01-485-3908
NSN 7035-00-585-2113
NSN 5960-00-822-2157
NSN 6130-01-485-0411
NSN 6650-01-399-0628