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Concept

Constant airflow regulator is an independent control element operating without an external power
supply, maintaining the required airflow rate regardless of upstream pressure changes. Consequently,system balancing is not needed.

As the dynamic pressure in the duct branch increases, the damper turns, thus increasing the pressure loss
and preventing an excessive increase in the airflow rate. Similarly, as the dynamic pressure increases, the
spring returns the blade to the open position, reducing the pressure loss and thus maintaining a constant
airflow rate.

The constant airflow damper includes a damper blade, supported by bearings and connected to
an factory calibrated spring. As a result of the balance between aerodynamic forces and the spring effect,
the necessary throttling effect is achieved and the set airflow rate is achieved.