Siemens 331-2904 Pneumatic Damper Actuator 3 to 7 psi 4 in Stroke Replacement MPN

Product Description

The Siemens Pneumatic Damper Actuator model 331-2904 operates in a range of three to seven psi with a four-inch stroke. This actuator connects directly to dampers in ventilation systems, providing a dependable method to control airflow. It is engineered for various applications, including mixing box control and outdoor air dampers in unit ventilators.

• Replaceable diaphragm for easy maintenance
• Positioning relay option for precise control
• Robust stainless steel actuator shaft

Product Highlights

This actuator includes features like forward travel stops and a hesitation mode to ensure minimum ventilation without needing a separate damper or actuator.

Product Information

Standard Information

• Brand: Siemens Building Technology
• Part Number: 331-2904

Technical Specifications

• Stroke: 4 inches
• Spring Range: 3 to 7 psi
• Weight: 3.32 lbs
• Dimensions: 12.2 x 6.85 x 4.6 inches
• Connection Type: 1/8 inch NPT Air Connection
• Mounting Type: Pivot mounting
• Body Material: All metal construction