Siemens Building Technology 331-2973 Kit Freon Bore Specifications: Standard 1/2-inch bore

Bore Specifications: Standard 1/2-inch bore compatible with common commercial motor shaft sizes

this high-pressure control is a standard component in various equipment manufactured under the Johnson Controls umbrella

this acetal or cast aluminum insert ensures proper stem guide alignment and support within the lower diaphragm case

As a direct replacement for EPT-102-1

Enhanced System Reliability: New replacement PCB eliminates intermittent operation caused by capacitor degradation or trace oxidation on legacy boards

Siemens Building Technology 331-2973 Kit Freon Bore Specifications: Standard 1/2-inch boreThe 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,