Hedday M847D 24V Zone Valve Actuator – ARD/ZD Damper Motor

The **Hedday M847D Zone Valve Actuator** is a direct replacement motor for Honeywell M847D1004-compatible **ARD and ZD zone dampers**, designed for seamless integration into 24V AC HVAC control systems. Engineered for reliability, this actuator features a **spring return function** to ensure dampers automatically close when power is lost, maintaining proper airflow control and system efficiency.

With an **anti-rotation mechanism** and **adjustable range stops**, the M847D delivers stable performance while allowing precise damper positioning to optimize heating and cooling zone applications. Compatible with **7/16″ damper shafts**, it replaces worn or malfunctioning operators in existing setups. Always verify your original model (e.g., Honeywell M847D1004) before purchasing to ensure full compatibility.