This hardware set eliminates the need for full valve replacement when updating hydronic control systems

it is optimized for horizontal mounting where the airflow directly cools the motor windings

What is the maximum operating temperature for the included gaskets

Built with a durable cast iron body material

Siemens Building Technology 331-3000 Actuator 322056-301 This hardware set eliminates theThe Siemens 331 3000 is a heavy duty, No. 4 pneumatic damper actuator engineered for reliable control of large dampers in commercial HVAC environments. As a veteran preferred HVAC pneumatic control solution, this rugged, metal fabricated unit is designed to provide gradual or positive actuation of terminal units, mixing boxes, and fire smoke dampers. It features a 4 inch stroke and a nominal 3 7 psi spring range, allowing for precise sequencing with