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Designed with 5/8-inch inlet and outlet connections
This 3/4 HP programmable ECM motor utilizes advanced electronically commutated motor technology to deliver precise airflow across varying static pressures
Heavy-Duty Circuit Protection: Includes robust capacitors and a reactor to filter DC current and protect against erratic power supply
This comprehensive boiler service kit includes high-grade gaskets
Siemens Building Technology 331-2904 Actuator 320074-702 Designed with 5/8-inch inlet andThe Siemens 331 2904 is a heavy duty #4 pneumatic damper actuator designed for the gradual or positive actuation of large dampers in commercial ventilating systems. This piston type actuator features an all metal body construction and is specifically UL recognized for high stakes fire and smoke applications. With a 3 7 psi spring range and a generous 4 inch stroke, it provides the necessary force for reliable operation of outdoor air, return air, and