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 6650-01-428-9958
NSN 5999-01-256-9903
NSN 4140-01-574-5593
NSN 5950-00-772-5984
NSN 5925-01-459-7882
NSN 5895-00-329-9590
NSN 6685-01-499-1995
NSN 5915-00-182-8068
NSN 6110-00-880-6376
NSN 6320-00-480-7922
NSN 5915-00-009-1064
NSN 5920-01-308-4761