Valve for use in the feed pipe or return pipe of a heating or cooling water circuit

摘要: The invention relates to a valve for use in heating or cooling water circuit, comprising housing (1, 16) that forms feed line (ZL) and discharge (AL), an adjusting unit (3) is separate from the penetrates into so as adjust flow rate through valve. includes closing body (4, 4a) which operatively connected tappet (5) such way gap (7) along with seat (6) stationary relation 16), said being adjustable by moving (5). According invention, designed closed forces during normal operation when not actuated, have be overcome actuated order open (7). Valves of type per make it possible develop actuating actuators dispense need spring allow directly active driving element actuator. This allows significant reduction size increase available actuation force, thus substantially improving operational reliability, especially following extended downtime system closed.