Volumetric flow regulator VRK

for air

CIRCULAR CROSS-SECTION SELF-ADJUSTING CAV FLOW REGULATORS The VRK circular flow regulators are designed for use in constant air volume (CAV) ventilation and airconditioning systems. They are used to maintain the pre-set flow rate, to a tolerance of 5%, without the aid of external power sources. The airflow is adjusted by a set of blades that, as they are hit by the airflow, are operated by a spring that is set using a graduated scale on the outside of the terminal. The air flow is calibrated in the factory based on the nominal value requested; if necessary, this value can be adjusted by micrometric adjustment of the spring.