The triple eccentric butterfly valve is different from the center line butterfly valve and the double eccentric butterfly valve. It is a butterfly valve with another structure. It has been widely used in China for more than 20 years. It is a very mature valve product. Why is it called triple eccentric butterfly valve? This is because there are "three biases" in this butterfly valve. What are the "three biases"?
One offset: The disc rotation center (ie the valve shaft center) and the disc sealing surface form a dimension A offset:
Two offsets: The disc rotation center (ie the valve shaft center) and the valve body centerline form a B offset:
Triple offset: The centerline of the sealing surface of the valve body and the centerline of the valve seat (ie, the centerline of the valve body) form an angular position with an angle of β
