Variable air volume valve is linked with the fume hood, right?

Yes. Variable air volume valve and fume cupboard linkage, fume cupboard is a kind of equipment used to control indoor air flow and exhaust, widely used in laboratories, medical institutions, industrial production and other places, the main function of the fume cupboard is to protect the operators and experimental samples from harmful gases, dust or microbial contamination, when the fume cupboard air volume needs to be increased or reduced, the variable air volume valve will be automatically adjusted according to the requirements of the system valve opening to maintain the required air volume. When the airflow in the fume hood needs to be increased or decreased, the variable air volume valve will automatically adjust the valve opening according to the system requirements to maintain the required airflow.