Siemens Building Technology 331-2998 Actuator
The Siemens Building Technology 331-2998 is a high-performance No. 4 Pneumatic Damper Actuator engineered for the gradual or positive actuation of HVAC dampers. This rugged, metal-fabricated unit is a staple for contractors managing air flow in fire and smoke damper systems, mixing boxes, and terminal units. With a 4-inch stroke and a nominal spring range of 8-13 psi, this actuator provides the precise mechanical force required for reliable pneumatic damper control.
Designed for versatile field integration, this model includes a clevis and crank for seamless connection to 3/8-inch, 7/16-inch, or 1/2-inch diameter shafts. Its pivot mounting style ensures optimal alignment in extended shaft or frame-mounted applications. The 331-2998 actuator is UL Recognized for fire/smoke leakage-rated dampers, making it a critical component for building safety compliance. Technical specialists prefer its modular construction and ozone-resistant rolling diaphragm for long-term serviceability in demanding commercial environments.
Key Benefits- Precise Control: Delivers consistent 4-inch stroke travel within the 8 to 13 psi spring range for accurate modulating control.
- Durable Construction: Heavy-duty all-metal housing withstands the rigors of mechanical rooms and high-cycle applications.
- Hardware Included: Comes equipped with an integral pivot, clevis, and crank to simplify field installation on standard damper shafts.
- Safety Certified: UL Recognized component for use in fire and smoke damper applications (Category EMKU2).
What is the maximum stroke of the Siemens 331-2998?
This No. 4 pneumatic actuator features a fixed 4-inch (102 mm) stroke, suitable for medium to large damper assemblies.
Can this actuator be used for normally open or normally closed dampers?
Yes, the pivot mounting and included hardware allow for configuration in both normally open and normally closed positions depending on the linkage setup.
What air connection size does this unit use?
The actuator typically features a 1/8-inch NPT female connection, compatible with standard 1/4-inch OD pneumatic 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: $179.70
-65%$179.70
$62.89Siemens Building Technology 331-2998 Actuator
The Siemens Building Technology 331-2998 is a high-performance No. 4 Pneumatic Damper Actuator engineered for the gradual or positive actuation of HVAC dampers. This rugged, metal-fabricated unit is a staple for contractors managing air flow in fire and smoke damper systems, mixing boxes, and terminal units. With a 4-inch stroke and a nominal spring range of 8-13 psi, this actuator provides the precise mechanical force required for reliable pneumatic damper control.
Designed for versatile field integration, this model includes a clevis and crank for seamless connection to 3/8-inch, 7/16-inch, or 1/2-inch diameter shafts. Its pivot mounting style ensures optimal alignment in extended shaft or frame-mounted applications. The 331-2998 actuator is UL Recognized for fire/smoke leakage-rated dampers, making it a critical component for building safety compliance. Technical specialists prefer its modular construction and ozone-resistant rolling diaphragm for long-term serviceability in demanding commercial environments.
Key Benefits- Precise Control: Delivers consistent 4-inch stroke travel within the 8 to 13 psi spring range for accurate modulating control.
- Durable Construction: Heavy-duty all-metal housing withstands the rigors of mechanical rooms and high-cycle applications.
- Hardware Included: Comes equipped with an integral pivot, clevis, and crank to simplify field installation on standard damper shafts.
- Safety Certified: UL Recognized component for use in fire and smoke damper applications (Category EMKU2).
What is the maximum stroke of the Siemens 331-2998?
This No. 4 pneumatic actuator features a fixed 4-inch (102 mm) stroke, suitable for medium to large damper assemblies.
Can this actuator be used for normally open or normally closed dampers?
Yes, the pivot mounting and included hardware allow for configuration in both normally open and normally closed positions depending on the linkage setup.
What air connection size does this unit use?
The actuator typically features a 1/8-inch NPT female connection, compatible with standard 1/4-inch OD pneumatic 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 Building Technology 331-2998 is a high-performance No. 4 Pneumatic Damper Actuator engineered for the gradual or positive actuation of HVAC dampers. This rugged, metal-fabricated unit is a staple for contractors managing air flow in fire and smoke damper systems, mixing boxes, and terminal units. With a 4-inch stroke and a nominal spring range of 8-13 psi, this actuator provides the precise mechanical force required for reliable pneumatic damper control.
Designed for versatile field integration, this model includes a clevis and crank for seamless connection to 3/8-inch, 7/16-inch, or 1/2-inch diameter shafts. Its pivot mounting style ensures optimal alignment in extended shaft or frame-mounted applications. The 331-2998 actuator is UL Recognized for fire/smoke leakage-rated dampers, making it a critical component for building safety compliance. Technical specialists prefer its modular construction and ozone-resistant rolling diaphragm for long-term serviceability in demanding commercial environments.
Key Benefits- Precise Control: Delivers consistent 4-inch stroke travel within the 8 to 13 psi spring range for accurate modulating control.
- Durable Construction: Heavy-duty all-metal housing withstands the rigors of mechanical rooms and high-cycle applications.
- Hardware Included: Comes equipped with an integral pivot, clevis, and crank to simplify field installation on standard damper shafts.
- Safety Certified: UL Recognized component for use in fire and smoke damper applications (Category EMKU2).
What is the maximum stroke of the Siemens 331-2998?
This No. 4 pneumatic actuator features a fixed 4-inch (102 mm) stroke, suitable for medium to large damper assemblies.
Can this actuator be used for normally open or normally closed dampers?
Yes, the pivot mounting and included hardware allow for configuration in both normally open and normally closed positions depending on the linkage setup.
What air connection size does this unit use?
The actuator typically features a 1/8-inch NPT female connection, compatible with standard 1/4-inch OD pneumatic 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.
