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 6620-00-542-1579
NSN 6620-01-004-7072
NSN 5996-01-413-7533
NSN 5996-00-327-6445
NSN 6150-01-580-6922
NSN 6240-01-114-1926
NSN 6685-01-502-6422
NSN 5915-00-887-6119
NSN 5990-00-984-3661
NSN 2925-01-538-1343
NSN 6650-01-461-6286
NSN 6220-00-343-0182