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By delivering consistent resistance values to the ERC2 control board
allowing for precise notification of system pressure fluctuations
Designed with 5/8-inch inlet and outlet connections
Integrating this condensing water heater neutralizer into your drainage loop prevents premature pipe failure and satisfies commercial building requirements for flue gas condensate handling
Siemens Building Technology 331-2904 Actuator 320074-702 By delivering consistent resistance valuesThe 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