TROX Group has developed the VFC air volume flow controller to deliver a pre-set air volume irrespective of varying system pressure.

The required air volume is set simply by adjusting the dial on the side of the unit and can even be carried out after installation. The unit is suitable for low air velocity ducts, down to 2m/s, and is claimed to require a differential pressure of just 20Pa to activate the damper mechanism.

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Building Sustainable Design