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Is the 40-watt output sufficient for cold-weather startups
Standard Conduit Compatibility: Features 1/2-14NPSM threads for seamless integration with standard North American electrical fittings
Enhanced System Reliability: New replacement PCB eliminates intermittent operation caused by capacitor degradation or trace oxidation on legacy boards
Bore Specifications: Standard 1/2-inch bore compatible with common commercial motor shaft sizes
Siemens Building Technology 331-2973 Kit Freon Is the 40-watt output sufficientThe Siemens 331 2973 is a rugged, metal fabricated No. 4 pneumatic damper actuator designed for the gradual or positive control of HVAC systems and fire smoke dampers. Built for high demand applications, this piston type actuator features a 4 inch stroke and a nominal 8 13 psi spring range, ensuring precise positioning of ventilating systems and mixing boxes. This universal kit includes a mounting plate, pivot post, clevis, and damper crank,
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