Siemens Building Technology 331-2906 Actuator
The Siemens Building Technology 331-2906 Actuator is a heavy-duty, No. 4 pneumatic damper actuator engineered for precise control in commercial HVAC systems. This piston-type actuator features a 5 to 10 psi nominal spring range and a robust 4-inch stroke, making it a reliable solution for modulating or two-position control of outdoor air, return air, and exhaust dampers. Designed with a pivot mount configuration, it reduces binding and mechanical stress on linkage components during the full stroke cycle. The unit is UL recognized for fire and smoke applications, constructed with an all-metal body and a replaceable, ozone-resistant EPDM rubber rolling diaphragm for long-term field durability. Serviceable via a 1/8-inch NPT air connection (typically supplied with a dual barb elbow for 1/4-inch OD tubing), this commercial HVAC actuator ensures positive positioning and high thrust output for mission-critical ventilation control. Whether you are performing a pneumatic actuator replacement or a new damper linkage installation, the 331-2906 delivers the rugged performance required by veteran field technicians.
- UL recognized for integration into specialized fire and smoke damper systems.
- Pivot mounting prevents mechanical binding, extending the life of your damper linkage.
- EPDM rolling diaphragm is ozone-resistant and fully replaceable for easy field maintenance.
- All-metal construction provides the durability needed for high-cycle mixing box and unit ventilator applications.
Common Questions & Support
What is the maximum air pressure for this actuator?
The 331-2906 is rated for a maximum internal air pressure of 30 psig, though typical operating ranges fall within the 5-10 psi spring sequencing.
Can this be used for normally open or normally closed dampers?
Yes, the 331-2906 is frequently used in both configurations depending on how the pivot mount and linkage are oriented during field setup.
How do I connect the air supply?
The housing features a standard 1/8-inch NPT female thread, usually paired with a barb fitting for 1/4-inch OD plastic or copper tubing.
This item is not eligible for free shipping.
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.
Original: $153.84
-65%$153.84
$53.84Siemens Building Technology 331-2906 Actuator
The Siemens Building Technology 331-2906 Actuator is a heavy-duty, No. 4 pneumatic damper actuator engineered for precise control in commercial HVAC systems. This piston-type actuator features a 5 to 10 psi nominal spring range and a robust 4-inch stroke, making it a reliable solution for modulating or two-position control of outdoor air, return air, and exhaust dampers. Designed with a pivot mount configuration, it reduces binding and mechanical stress on linkage components during the full stroke cycle. The unit is UL recognized for fire and smoke applications, constructed with an all-metal body and a replaceable, ozone-resistant EPDM rubber rolling diaphragm for long-term field durability. Serviceable via a 1/8-inch NPT air connection (typically supplied with a dual barb elbow for 1/4-inch OD tubing), this commercial HVAC actuator ensures positive positioning and high thrust output for mission-critical ventilation control. Whether you are performing a pneumatic actuator replacement or a new damper linkage installation, the 331-2906 delivers the rugged performance required by veteran field technicians.
- UL recognized for integration into specialized fire and smoke damper systems.
- Pivot mounting prevents mechanical binding, extending the life of your damper linkage.
- EPDM rolling diaphragm is ozone-resistant and fully replaceable for easy field maintenance.
- All-metal construction provides the durability needed for high-cycle mixing box and unit ventilator applications.
Common Questions & Support
What is the maximum air pressure for this actuator?
The 331-2906 is rated for a maximum internal air pressure of 30 psig, though typical operating ranges fall within the 5-10 psi spring sequencing.
Can this be used for normally open or normally closed dampers?
Yes, the 331-2906 is frequently used in both configurations depending on how the pivot mount and linkage are oriented during field setup.
How do I connect the air supply?
The housing features a standard 1/8-inch NPT female thread, usually paired with a barb fitting for 1/4-inch OD plastic or copper tubing.
This item is not eligible for free shipping.
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.
Product Information
Product Information
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Description
The Siemens Building Technology 331-2906 Actuator is a heavy-duty, No. 4 pneumatic damper actuator engineered for precise control in commercial HVAC systems. This piston-type actuator features a 5 to 10 psi nominal spring range and a robust 4-inch stroke, making it a reliable solution for modulating or two-position control of outdoor air, return air, and exhaust dampers. Designed with a pivot mount configuration, it reduces binding and mechanical stress on linkage components during the full stroke cycle. The unit is UL recognized for fire and smoke applications, constructed with an all-metal body and a replaceable, ozone-resistant EPDM rubber rolling diaphragm for long-term field durability. Serviceable via a 1/8-inch NPT air connection (typically supplied with a dual barb elbow for 1/4-inch OD tubing), this commercial HVAC actuator ensures positive positioning and high thrust output for mission-critical ventilation control. Whether you are performing a pneumatic actuator replacement or a new damper linkage installation, the 331-2906 delivers the rugged performance required by veteran field technicians.
- UL recognized for integration into specialized fire and smoke damper systems.
- Pivot mounting prevents mechanical binding, extending the life of your damper linkage.
- EPDM rolling diaphragm is ozone-resistant and fully replaceable for easy field maintenance.
- All-metal construction provides the durability needed for high-cycle mixing box and unit ventilator applications.
Common Questions & Support
What is the maximum air pressure for this actuator?
The 331-2906 is rated for a maximum internal air pressure of 30 psig, though typical operating ranges fall within the 5-10 psi spring sequencing.
Can this be used for normally open or normally closed dampers?
Yes, the 331-2906 is frequently used in both configurations depending on how the pivot mount and linkage are oriented during field setup.
How do I connect the air supply?
The housing features a standard 1/8-inch NPT female thread, usually paired with a barb fitting for 1/4-inch OD plastic or copper tubing.
This item is not eligible for free shipping.
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.
