Siemens Building Technology 331-3002 Kit

The Siemens Building Technology 331-3002 Kit features the No. 4 Pneumatic Damper Actuator, a rugged, metal-fabricated powerhouse engineered for precision air flow control in commercial HVAC systems. This piston-type pneumatic actuator is designed for the gradual or positive actuation of HVAC dampers and fire/smoke dampers, offering a consistent 4-inch stroke. Operating within a 5-10 psi spring range, it provides the necessary force for reliable mixing box control and terminal unit operation. The 331-3002 universal mounting kit includes an integral pivot and pivot post, facilitating both fixed and pivot mounting configurations on extended shafts or frames. Performance is bolstered by a replaceable ozone-resistant EPDM rubber diaphragm and a dual barb elbow fitting for 1/4-inch OD tubing via a 1/8-inch NPT female connection. This field-proven Siemens 331-3002 replacement kit ensures seamless integration into existing pneumatic control loops, providing veteran technicians with a durable solution for demanding ventilation environments.

Key Benefits

• Universal Versatility: The 331-3002 actuator kit includes a clevis, crank, and rocker arm for flexible installation in various damper configurations.
• Durable Infrastructure: Features an all-metal body construction to withstand harsh mechanical environments without performance degradation.
• Maintenance Efficiency: Equipped with a replaceable pneumatic actuator diaphragm, allowing for easy field service and extended equipment life.
• High Force Output: Optimized for applications requiring a large effective diaphragm area and a long 4-inch stroke for heavy-duty dampers.

Common Questions

What is the effective spring range for this Siemens kit?
The unit is calibrated for a 5-10 psi nominal spring range, making it ideal for standard sequencing in pneumatic control systems.

Can this actuator be used for fire and smoke dampers?
Yes, the No. 4 pneumatic damper actuator is specifically designed for both standard ventilating systems and safety-critical fire/smoke damper applications.

What type of mounting does the Siemens 331-3002 support?
This universal mounting kit supports both frame mounting and extended shaft mounting, providing the hardware needed for either fixed or pivot-style installations.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.