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Built for the rigors of high-temperature flue gases
you prevent dangerous flue gas leaks and restore consistent comfort to your home
Its brushless DC motor technology eliminates the failures common with traditional brushed motors
Dynamic Efficiency: Automated temperature reset control reduces energy waste by aligning supply setpoints with actual ambient loads
Normally Closed Fail-Safe: Reliable spring-return action ensures valves or dampers close securely during power interruptions
Siemens Building Technology 658-071 Actuator 319848-301 Built for the rigors ofThe Siemens Building Technology 658 071 is a professional grade Replacement Actuator with Trim engineered specifically for the Powertop 658 Series. As a Normally Open configuration, this pneumatic assembly is a critical component for technicians maintaining sequence and changeover valve operations in commercial HVAC systems. Designed for a 3 4" line size with a 6. 3 Cv flow coefficient, it provides precise fluid control, ensuring optimal pressure drop