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this is an externally adjustable valve
This is standard configuration for low water cutoff modules where the internal relay must trip to de-energize the burner circuit when levels drop below the probe
regulating fan speed control
making it an ideal solution for managing complex HVACR systems
Siemens Building Technology 194-3043 Retrostat 340155-7024 this is an externally adjustableThe Siemens 194 3043 Retrostat is a specialized pneumatic damper actuator engineered for precise day night changeover in commercial HVAC systems. This Johnson Controls retrofit actuator allows for seamless integration into existing pneumatic infrastructures, specifically designed to replace aging or failing units in air handling units (AHUs) and terminal zones. Operating on standard pneumatic control signals, the 194 3043 facilitates dual setpoint
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