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EA10 (Electrothermal Actuator)

product description
     The EA10.... series of electric actuators is an electric actuator for opening and closing hot-distribution valves in heating, ventilating and air-conditioning systems. It is particularly suitable for floor-radiant heating or floor-radiant cooling systems. A two-point switch or a pulsed room thermostat controls it.


working principle

     The electrothermal actuator uses PTC thermal resistance elastic elements and springs. The wax is heated by the working current to resist movement of the thimble. The force is transmitted to the valve stem through the ejector pin to open or close the valve.

Normally closed:
     When there is current flow, the normally closed electrothermal actuator is heated, the ejector pin moves up, and the valve opens; when the current breaks, the spring presses the ejector pin down and the valve closes.
     In the normal case of no current, the spring of the electrothermal actuator is matched to the valve closing requirement, ensuring that the valve is normally closed.

Valve adapter:
     The valve adapter guarantees a good combination of electrothermal actuators with the widest range of valves or manifold thermostats.