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Continuous duty cycle
503U - Double gas valve 2" BSP
oil or combustion air
The camshaft of the control section
They are normally applied on the most common combustion plants like furnaces
Siemens SQN30.401A2700 Damper Actuator 1% increase applied Continuous duty cycleThe SQN30 is an electromotoric actuator for use with air dampers and control valves of oil or gas burners of small to medium capacity. Actuators are designed for driving gas or air dampers of oil or gas burners of small to medium capacity, or for load dependent control of the fuel or combustion air volume. SQN30. 401A2700 Features Made of impact proof and heat resistant plastic The housing accommodates: The reversible synchronous motor with gear