QD-DFL Series Rectangular Constant Air Volume Damper

The rectangular constant air volume damper is designed for maintaining a constant volume flow rate within a certain degree. It is widely used in fresh air systems, exhaust systems, variable air volume air conditioning systems, purification air conditioning systems and more.

Features The rectangular constant air volume damper is equipped with automatic machinery to adjust the airflow direction. It consumes no energy. The operating temperature ranges from 10°-15° with a differential pressure range of 50-10p. It can be installed horizontally and vertically. The rectangular constant air volume damper features a high flow adjustment accuracy. Its flow range is 4:1. It features a pointer to indicate the flow scale, the error is ±4%.