Siemens 331-4312 Pneumatic Actuator 3-7 PSI Spring Range 2-3/8 Inch Pivot

The Siemens Building Technology 331-4312 is a pneumatic actuator designed for use in commercial HVAC and building automation systems. Engineered to control dampers and valves in air handling systems, this actuator operates on a 3–7 PSI spring range and is compatible with a 2-3/8 inch pivot shaft configuration, making it suitable for a wide range of damper linkage assemblies.

Siemens pneumatic actuators are trusted in commercial and industrial building automation for their reliability, precise control authority, and long service life. This unit integrates seamlessly with pneumatic control systems to provide accurate positioning of HVAC dampers in response to control signal pressure changes.

Key Features:

• Spring Range: 3–7 PSI for reliable pneumatic actuation
• Pivot Size: 2-3/8 inch pivot shaft compatibility
• Application: Pneumatic damper and valve actuation in commercial HVAC systems
• Manufacturer: Siemens Building Technologies — a global leader in building automation and controls
• Designed for dependable, long-term performance in commercial building environments
• Compatible with standard pneumatic control systems operating on building air supply

The Siemens 331-4312 is an ideal replacement or upgrade actuator for facilities managers and HVAC contractors maintaining pneumatic control systems in commercial buildings.