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SRHT 

Spring Return Round Damper

Starting at $ 207.60

Available in 24vac

Available Sizes: 10", 12", 14" and 18” diameter

Had enough of  residential grade spring return motor and damper failures? Move up to the commercial  grade Belimo TF Series  2 wire Spring return dampers. Service calls are expensive, only to find a cheap spring return damper at the source of your problems! 


These Durozone SRHT Spring Return Dampers use the industry renowned Belimo TF series spring return motors, the same motors found on our Super Duty Spring Return Series, and are mounted on a heavier duty can. We have  a low quantity of these dampers available so get them while they’re here!


DuroZone SRHT Hi-Torque Dampers are shipped in the Spring Open (S.O.) position. Field reversible motor can be re-configured for spring closed or fresh air operation. Features crimped edge for a true-size damper.


1/2  the power, but twice the torque! How is that possible? Unlike cheap direct drive spring return motors, the Swiss engineered  Belimo TF series is a “gear train” motor, and uses a gear train to multiply torque from a smaller, more efficient motor.  And that's important, since a spring return motor pulls power continuously to overcome the spring, when energized. 


• Works with any 24vac  zone control  system , replaces any two wire spring return damper.

• 5 year factory warranty on the Belimo TF series motor.  

• Field reversible from Normally open to Normally closed

• All Duro Dyne commercial grade damper drive hardware

• Uses half the power of cheaper residential grade spring return dampers

• Higher Airflow Capabilities 

• Muscular 22 inch pounds of torque at 5va, 2.5 watts

• Handles larger ducts with ease.


Damper Accessories