Designed with a single pole double throw (SPDT) configuration

Does this switch resolve a "blocked flue" error

Constructed with dual bellows

including XC14 and XP14 series

5 Cv rating ensures minimal pressure drop across the 3/4 inch NPT threaded ports

Siemens Building Technology 331-2973 Kit 320720-756 Designed with a single poleThe 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,