Always verify the motor plate RPM and voltage against the cabinet data plate

Direct OEM Fit: Engineered specifically for ASCO RedHat II valves

the 336919-756 supports consistent air distribution

How do I change the spring return direction (CW vs CCW)

This valve is designed for 24 Vac standing pilot heating appliances

Siemens Building Technology GRD121.1U Actuator 321142-301 Always verify the motor plateThe Siemens GRD121. 1U is a high torque 24V fire and smoke damper actuator engineered for precise 2 position control in critical life safety systems. As a veteran technician knows, reliability in smoke containment is non negotiable; this OpenAir electronic actuator delivers 30 lb in of torque to ensure positive closure against high velocity airflow. Operating on 24 VAC DC, the GRD121. 1U features a robust spring return fail safe mechanism that