Single eccentric flange butterfly valve

Single eccentric butterfly valve

To solve the problem of compression between the butterfly plate and the valve seat of the concentric butterfly valve, a single eccentric butterfly valve has been developed, which is characterized by the deviation of the valve stem axis from the center of the butterfly plate, so that the upper and lower ends of the butterfly plate no longer become the axis of rotation, dispersing and reducing the excessive compression between the upper and lower ends of the butterfly plate and the valve seat.

The butterfly valve and the upper and lower valve shafts are connected by irregular holes and irregular shafts, which realizes the function of a no pin connection for the butterfly plate to float up, down, left, and right during the opening and closing process of the butterfly plate, reducing the interference area between the butterfly plate and the valve seat, thereby greatly reducing the torque. The floating structure of the butterfly plate realizes the production process of single eccentricity and the use function of variable eccentricity.

An anti butterfly plate over position stopper is installed in the inner cavity of the valve body to ensure that the butterfly plate is not in place when closed.

The upper and lower valve shaft holes in the valve body cavity and the upper and lower valve shaft holes in the butterfly plate are protected with bushings to prevent large particles in the medium from entering the valve shaft holes.

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