GT31 Burner Servo Motor

The GT31 is a servo motor Zhongli Weiye stocks as a compatible spare, driving the air damper or modulating valve on gas and oil burners to the control box's commanded position. Its synchronous drive with position feedback lets the burner hold a precise combustion-air or fuel setting as load changes. We match the shaft, torque and feedback signal to the original actuator before supply so the GT31 seats and signals correctly. It is held as a GT-type compatible spare — not a branded original — for plants that want a local backup for damper and valve modulation without an OEM wait. On a gas train the GT31 most often drives the combustion-air damper, turning the control box's 0 to 90 degree command into precise airflow so the burner holds its air/gas ratio as load changes. Its feedback tells the controller the damper has actually reached the set position, which is what keeps combustion stable rather than hunting. Plants hold it as the compatible spare for damper-actuator form factors. On the bench the GT31 develops 10 Nm of torque over a 95-degree travel and confirms position via a cam-driven microswitch set, so it is built for air dampers on the burner head where a larger leverage arm swings the flap between purge and firing. It drives shafts from 8 mm to 16 mm.

Why buyers choose it

• The GT31 is a servo motor stocked by Zhongli Weiye as a compatible spare, driving a burner damper or modulating valve to the control box's commanded position.
• Fitment: Mounted on the air damper or gas valve to modulate combustion air and fuel.