Siemens Building Technology 331-2976 Actuator
The Siemens 331-2976 is a heavy-duty No. 4 pneumatic damper actuator engineered for precise control in commercial HVACR systems. Specifically designed for applications requiring a 4-inch stroke and a 5-10 psi spring range, this unit provides the necessary force for the gradual or positive actuation of damper linkages. Its rugged steel housing is finished with a cathodic epoxy electrocoat to resist corrosion, making it a reliable choice for air handling units (AHUs), mixing boxes, and terminal units.
This Powers Controls series actuator features an 11-square-inch effective diaphragm area and an ozone-resistant EPDM rubber rolling diaphragm, ensuring responsive performance even in high-cycle environments. As a UL-recognized component, the 331-2976 actuator is suitable for use on fire and smoke dampers, provided it is installed according to local codes. For contractors, the integral pivot mounting simplifies alignment with HVAC damper shafts, significantly reducing installation time and mechanical binding risks.
Key Benefits for Technicians- Precise 5-10 PSI Range: Ideal for sequencing and standard pneumatic control systems.
- Robust Construction: Features a stainless steel stem and epoxy-coated steel housing for maximum durability.
- UL Recognized: Certified for use in critical fire and leakage-rated damper applications.
- Field Serviceable: The rolling diaphragm and internal springs are replaceable, extending the operational life of the unit.
- Flexible Mounting: The integral pivot mount allows for smooth movement without damaging the linkage assembly.
What is the maximum air pressure for the Siemens 331-2976?
This actuator is rated for a maximum internal air pressure of 25 psig (172 kPa). Exceeding this limit can damage the rolling diaphragm or cause premature failure of the seals.
Can I add a positioning relay to this model?
Yes, the Siemens 331-2976 can be field-fitted with a positioning relay (such as the RL 147) for higher accuracy in stem positioning and to overcome friction in large damper sections.
How do I handle mounting in tight spaces?
The pivot mounting design is specifically intended to allow the actuator to move with the linkage, which prevents side-loading on the stem. Always ensure the 1/8-inch NPT air connection is accessible for 1/4-inch O.D. 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: $151.19
-65%$151.19
$52.92Siemens Building Technology 331-2976 Actuator
The Siemens 331-2976 is a heavy-duty No. 4 pneumatic damper actuator engineered for precise control in commercial HVACR systems. Specifically designed for applications requiring a 4-inch stroke and a 5-10 psi spring range, this unit provides the necessary force for the gradual or positive actuation of damper linkages. Its rugged steel housing is finished with a cathodic epoxy electrocoat to resist corrosion, making it a reliable choice for air handling units (AHUs), mixing boxes, and terminal units.
This Powers Controls series actuator features an 11-square-inch effective diaphragm area and an ozone-resistant EPDM rubber rolling diaphragm, ensuring responsive performance even in high-cycle environments. As a UL-recognized component, the 331-2976 actuator is suitable for use on fire and smoke dampers, provided it is installed according to local codes. For contractors, the integral pivot mounting simplifies alignment with HVAC damper shafts, significantly reducing installation time and mechanical binding risks.
Key Benefits for Technicians- Precise 5-10 PSI Range: Ideal for sequencing and standard pneumatic control systems.
- Robust Construction: Features a stainless steel stem and epoxy-coated steel housing for maximum durability.
- UL Recognized: Certified for use in critical fire and leakage-rated damper applications.
- Field Serviceable: The rolling diaphragm and internal springs are replaceable, extending the operational life of the unit.
- Flexible Mounting: The integral pivot mount allows for smooth movement without damaging the linkage assembly.
What is the maximum air pressure for the Siemens 331-2976?
This actuator is rated for a maximum internal air pressure of 25 psig (172 kPa). Exceeding this limit can damage the rolling diaphragm or cause premature failure of the seals.
Can I add a positioning relay to this model?
Yes, the Siemens 331-2976 can be field-fitted with a positioning relay (such as the RL 147) for higher accuracy in stem positioning and to overcome friction in large damper sections.
How do I handle mounting in tight spaces?
The pivot mounting design is specifically intended to allow the actuator to move with the linkage, which prevents side-loading on the stem. Always ensure the 1/8-inch NPT air connection is accessible for 1/4-inch O.D. 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.
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Description
The Siemens 331-2976 is a heavy-duty No. 4 pneumatic damper actuator engineered for precise control in commercial HVACR systems. Specifically designed for applications requiring a 4-inch stroke and a 5-10 psi spring range, this unit provides the necessary force for the gradual or positive actuation of damper linkages. Its rugged steel housing is finished with a cathodic epoxy electrocoat to resist corrosion, making it a reliable choice for air handling units (AHUs), mixing boxes, and terminal units.
This Powers Controls series actuator features an 11-square-inch effective diaphragm area and an ozone-resistant EPDM rubber rolling diaphragm, ensuring responsive performance even in high-cycle environments. As a UL-recognized component, the 331-2976 actuator is suitable for use on fire and smoke dampers, provided it is installed according to local codes. For contractors, the integral pivot mounting simplifies alignment with HVAC damper shafts, significantly reducing installation time and mechanical binding risks.
Key Benefits for Technicians- Precise 5-10 PSI Range: Ideal for sequencing and standard pneumatic control systems.
- Robust Construction: Features a stainless steel stem and epoxy-coated steel housing for maximum durability.
- UL Recognized: Certified for use in critical fire and leakage-rated damper applications.
- Field Serviceable: The rolling diaphragm and internal springs are replaceable, extending the operational life of the unit.
- Flexible Mounting: The integral pivot mount allows for smooth movement without damaging the linkage assembly.
What is the maximum air pressure for the Siemens 331-2976?
This actuator is rated for a maximum internal air pressure of 25 psig (172 kPa). Exceeding this limit can damage the rolling diaphragm or cause premature failure of the seals.
Can I add a positioning relay to this model?
Yes, the Siemens 331-2976 can be field-fitted with a positioning relay (such as the RL 147) for higher accuracy in stem positioning and to overcome friction in large damper sections.
How do I handle mounting in tight spaces?
The pivot mounting design is specifically intended to allow the actuator to move with the linkage, which prevents side-loading on the stem. Always ensure the 1/8-inch NPT air connection is accessible for 1/4-inch O.D. 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.
