Radiator screw fitting with proportional presetting for use in hot water central heating systems and cooling circuits for shutting off, filling, and draining the radiator. Gunmetal/brass fitting with nickel-plated housing. Valve cone made of brass. Further technical features include: dimension pipe connection 3/4 inch, design with one end piece/female thread, adjustable, size radiator connection 3/4 inch (20), height 58mm, Kvs value 1.7, without drain valve, without squeeze set, surface protection is nickel-plated, right-angled design, flow direction opposite is no, shortened construction length is no, and material of the housing is brass.