with female thread according to EN 10226, pre-settable, dezincification-resistant brass, with stepless presetting, eco-measuring technology, with measuring and drain valves mounted on both sides and insulating shells, for central heating and cooling systems with closed circuits, for operation with non-aggressive fluids, M 30 x 1.5 threaded connection, all functional elements of the valves are located on one side, circuit regulating valves enable the hydraulic balancing of circuit lines and system components, max. operating pressure: 16 bar (PN 16), operating temperature: -10 to +120 °C