GL Type Gravity Check Valve[Search Related Products]
1. The air duct is equipped with a control system to adjust the air volume.
2. Gravity hammer, differential pressure indicator and damper are composed of control gravity damper.
3. Use the adjustable gravity hammer to control the opening degree of the damper through the opening resistance of the valve.
4. By realizing the working principle of maintaining a certain positive value of ventilation and air-conditioning area.