Knob-type Manual Multi-leaf Airflow Control Valve

Product Specifications:

1. The manual multi-blade butterfly damper is specifically designed for airflow regulation and pressure control in ventilation and air conditioning systems.

2. It can be installed directly on ductwork to regulate indoor airflow.

3. The damper features a worm gear mechanism that allows it to be locked in any position during adjustment; turning the handwheel clockwise closes the blades.

4. When the valve is closed, the air leakage meets the requirements for sealed-type valves as specified in (JG/T436-2014 Airflow Control Valves for Building Ventilation).

Product Features:

1. The control valve housing and blades are made of galvanized steel plate, with a thickness of 1.5 mm for both the housing and the blades.

2. The control valve bearings are made of oil-impregnated copper powder metallurgy, requiring no additional lubrication and providing permanent lubrication.

3. The blade shaft is made of 12-grade galvanized round steel or stainless steel round steel.

When the valve width (W) exceeds 1200 mm, a center partition is added to separate the blades, serving to reinforce the structure.