The Constant Air Volume Valve adopts a self-operated pressure-sensing structure, which automatically adjusts the valve opening based on airflow pressure. It maintains a stable set air volume despite changes in system static pressure, featuring high control accuracy, reliable operation and low noise. With a compact structure and easy installation, it is ideal for cleanrooms, laboratory fume hoods, hospital operating rooms, pharmaceutical workshops, electronics factories and other places requiring strict air volume stability, ensuring constant indoor pressure difference and air change rates.