Siemens Building Technology 331-2998 Actuator 326058-757 Integrated Gasket: Includes a factory-installed

Integrated Gasket: Includes a factory-installed gasket to provide a tight seal against the heat exchanger and reduce vibration noise

By minimizing oil dilution and viscosity issues

7 sones mean for noise level

Serviceability: Union nut design permits 360-degree rotation and quick orifice replacement without removing the body from the line

What is the proper plumbing for a bi-directional ±0

Siemens Building Technology 331-2998 Actuator 326058-757 Integrated Gasket: Includes a factory-installedThe Siemens Building Technology 331 2998 is a high performance No. 4 Pneumatic Damper Actuator engineered for the gradual or positive actuation of HVAC dampers. This rugged, metal fabricated unit is a staple for contractors managing air flow in fire and smoke damper systems, mixing boxes, and terminal units. With a 4 inch stroke and a nominal spring range of 8 13 psi, this actuator provides the precise mechanical force required for reliable pneumatic