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Standardized 170°F Open / 140°F Close calibration for accurate system protection
System Integrity: Fast-acting SPST switch logic provides immediate feedback to the control board to protect against combustion or airflow failures
this brass body solenoid valve features a 5/32" orifice and is rated for a broad pressure range of 1 to 150 PSI
The Armstrong Furnace R44957-001 Control is a critical OEM replacement ignition blower control designed to manage the combustion and air circulation cycles in high-efficiency heating systems
Drop-In Compatibility: Standard 3/8" suction and 1/4" discharge stub connections facilitate rapid field replacement for existing RST64C1E models
Siemens Building Technology GRD221.1U Actuator 322838-753 Standardized 170°F Open / 140°FThe Siemens Building Technology GRD221. 1U Actuator is a specialized 120V fire and smoke damper actuator designed for critical life safety HVACR applications. As a veteran grade two position spring return actuator, it delivers 30 lb in of torque, ensuring reliable open close operation for smoke control and combination fire smoke dampers. Built to exceed the rigors of UL555 and UL555S standards, this unit provides a nominal 30 second drive time and a
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