A wax thermostatic element is activated by a thermistor with a positive temperature coefficient responding to a signal sent by a room thermostat or timing thermostat. The reinforced resin of the base provides a strong structure for the valve fitting area, and self lubrication of the mobile support creates minimal friction.
There are four versions of these actuators: normally closed; normally open, standard 2-wire; and 4-wire with auxiliary contact for additional commands. They are all available for 230 and 24 V operation.
A transparent window on the cover enables the status of the actuator to be visually checked.
www.martinorgee.co.uk
Related articles:
