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the MC-431 ensures reliable non-spring return actuator performance without the complexity of modern digital interfaces
2 to 6 bar)
saving energy and providing more consistent temperature control while maintaining the capability to ramp up when high-heat demand is triggered
often found in Noble Fire Combi Boilers
International Environmental 71159943 Actuator 320720-756 the MC-431 ensures reliable non-springThe International Environmental 71159943 Actuator is a field proven 24V N C 2 position actuator designed for high cycle performance in HVAC fan coil units, air handlers, and VAV systems. This direct drive actuator operates with a normally closed (N C) configuration, ensuring the valve defaults to a closed state upon power loss to prevent uncontrolled flow. Engineered as a genuine IEC replacement part, this model is cross referenced with Erie
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