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Rugged Housing: Built to withstand the temperature fluctuations typical of a commercial combustion chamber environment
With its high-strength stainless steel diaphragms and interchangeable capacity cartridges
making it a direct replacement actuator for standard high-traffic systems
For technicians performing system startups or troubleshooting
Rugged Construction: Built to withstand the temperature fluctuations and duty cycles common in commercial mechanical rooms
Siemens Combustion SQM40.255R11 Actuator 318518-761 Rugged Housing: Built to withstandThe Siemens SQM40. 255R11 is a high torque combustion actuator engineered for precise modulation of fuel and air flow in industrial burner systems. Operating on 110V AC, this modulating motor utilizes a 4 20 mA control signal with a 135 Ohm impedance to drive butterfly valves, dampers, and oil pressure controllers. Designed specifically for counter clockwise (CCW) operation, the unit delivers 90 in lb of torque with a 90 degree stroke time of 25
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