The Siemens electro-hydraulic actuator designed for the operation of Siemens 2-port and 3-port valves. With a stroke of 20mm, it is suitable for use as a control and safety shut-off valve in heating, ventilation, and air conditioning plants. This actuator is known for its high positioning force of 2800N and its easy installation on valves without the need for adjustments. It features a manual adjuster and position indicator for convenient operation and also offers optional functions such as auxiliary switches, potentiometer, stem heater, and mechanical stroke inverter. Suitable for 2-port and 3-port valves Positioning force of 2800N for efficient operation 20mm stroke for control and safety shut-off applications Easy installation on valves without the need for adjustments Manual adjuster and position indicator for convenient operation Optional functions available for enhanced functionality Reliable and versatile actuator for valve automation