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 6220-01-543-9303
NSN 5855-01-510-4564
NSN 6320-01-144-3810
NSN 6240-00-963-5964
NSN 5965-00-908-1402
NSN 5915-01-267-5670
NSN 6150-01-464-0760
NSN 6110-01-424-0612
NSN 5905-01-621-6073
NSN 6650-00-868-6270
NSN 6105-01-369-1262
NSN 5855-00-235-2676