Description
The Siemens Building Technology 331-4311 is a No. 3 pneumatic actuator featuring an extended shaft and a 3–7 lb (psig) spring range, engineered for reliable valve and damper positioning in commercial HVAC and building automation systems.
Designed to deliver consistent, repeatable actuation performance, the 331-4311 integrates seamlessly into pneumatic control loops where precise modulation is critical. The extended shaft configuration provides added installation flexibility, making it well-suited for applications where standard shaft reach is insufficient.
Key Features
- No. 3 actuator size for compatibility with a wide range of Siemens pneumatic control valves and dampers
- Extended shaft design for greater installation versatility
- 3–7 psig spring range for accurate, proportional positioning
- Engineered for commercial building automation and HVAC control systems
- Manufactured by Siemens Building Technology — a trusted leader in building controls
Application
Ideal for use in VAV systems, air handling units, and hydronic control applications where pneumatic actuation is specified. The 331-4311 is a direct replacement or upgrade component for existing Siemens pneumatic control installations.
Specifications
- SKU: 331-4311
- Actuator Type: Pneumatic
- Actuator Size: No. 3
- Spring Range: 3–7 psig
- Shaft Configuration: Extended
- Brand: Siemens Building Technology
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