The electric ventilation regulating butterfly valve is designed and manufactured using a steel plate bent and welded to two flanges. The edge of the butterfly plate does not directly contact the shell, leaving a small gap. When the butterfly plate is closed, there is no friction, and the torque is very light. Its structure is simple, lightweight, and easy to install.
The electric ventilation regulating butterfly valve is designed and manufactured using a steel plate bent and welded to two flanges. The edge of the butterfly plate does not directly contact the shell, leaving a small gap. When the butterfly plate is closed, there is no friction, and the torque is very light. Its structure is simple, lightweight, and easy to install.
The electric ventilation regulating butterfly valve is designed and manufactured using a steel plate bent and welded to two flanges. The edge of the butterfly plate does not directly contact the shell, leaving a small gap. When the butterfly plate is closed, there is no friction, and the torque is very light. Its structure is simple, lightweight, and easy to install.

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