The thermal actuator is a small actuator for electrical on/off controls and PWM to activate several types of valves and floor heating manifolds. The actuator is equipped with a visual position indicator to show the open or closed position of the valve. The product range covers actuators for 24 V (SELV) or 230 V supply in both normally closed (NC) or normally open (NO) versions (valve positions with no supply voltage to the actuator). The actuator can be connected to valves with Heimeier/MNG/Oventrop M30×1,5 connection. Other valves must be verified individually to ensure correct valve closing measurement and valve top geometry