the 100109978 is the current manufacturer-recommended replacement for the legacy part number 9004606205

because it utilizes SPDT switching

always confirm the specific Multi Products spec number stamped on your existing housing to ensure identical speed and torque ratios

the 3R2A0 is typically rated for 225 psig at 150°F

Common Questions: Is this spring compatible with VG7000 Series valves

Resideo M847D-ZONE Replacement motor 321702-401 the 100109978 is the currentThe Resideo M847D ZONE replacement motor is a purpose built 24Vac spring return actuator engineered for direct compatibility with ARD and ZD zone dampers. This two position damper motor provides reliable air flow control in residential and commercial zoning systems. Designed as a direct replacement for M847D1004, the unit features a power closed, spring open configuration, ensuring the damper default position is open during power loss for system