The electric triple eccentric butterfly valve consists of a rotary electric actuator and a triple eccentric butterfly valve body.The valve body adopts a triple eccentric metal hard sealing structure,and the valve seat and sealing surface are made of all stainless steel,which has good corrosion resistance and bidirectional sealing function.The electric triple eccentric butterfly valve has the characteristics of low friction between the butterfly plate and the valve seat,long service life,wide application range,and easy maintenance.Electric triple eccentric butterfly valves are widely used in industries such as petroleum,chemical,power,metallurgy,steel,papermaking,pharmaceuticals,food,textiles,and light industry.
Main features of electric triple eccentric butterfly valve
1.This valve adopts a three eccentric sealing structure,with minimal wear on the valve seat and butterfly plate.
2.The sealing ring is made of stainless steel,which has the dual advantages of metal hard sealing and elastic sealing.It has excellent sealing performance in both low and high temperatures,corrosion resistance,and long service life.
3.The sealing surface of the butterfly plate is made of welded cobalt based hard alloy,which is wear-resistant and has a long service life.
4.The large-diameter butterfly plate adopts a frame structure,with high strength,large overcurrent area,and low flow resistance.
5.Electric triple eccentric butterfly valve has bidirectional sealing function,which is not limited by the flow direction of the medium or the spatial position during installation,and can be installed in any direction.
6.The drive device can be installed in multiple stations(rotated 90°or 180°)for easy user use.
Main technical parameters of electric triple eccentric butterfly valve
valve body

Trim

Actuator

Note: For detailed actuator parameters, please visit the electric actuator page for reference.
Main component materials of electric triple eccentric butterfly valve

Main performance indicators of electric triple eccentric butterfly valve

Electric triple eccentric butterfly valve triple eccentric sealing principle

On the basis of the double eccentric sealing butterfly valve, the center line of the valve seat is further offset with the center line of the valve body to form a β angle position. The result of the offset is shown in the A-A sectional view of Figure 2. When the three eccentric hard sealing butterfly valve is in the fully open state, the sealing surface of the butterfly plate will completely detach from the sealing surface of the valve seat, and a gap Y similar to that of the double eccentric sealing butterfly valve will be formed between the sealing surface of the butterfly plate and the sealing surface of the valve body. As shown in the figure, the formation of the β angle position will cause the tangent of the rotation trajectory of the butterfly plate sealing surface and the sealing surface of the valve seat to form an angle of θ 1 and θ 2 on the large and small semicircles of the butterfly plate rotating with long and short radii. When the butterfly valve is opened and closed, the sealing surface of the butterfly valve gradually disengages and presses against the sealing surface of the valve seat, thereby completely eliminating mechanical wear and scratches between the two seals of the butterfly valve sealing pair during butterfly valve opening and closing. When the butterfly valve is opened from 0 ° to 90 °, the sealing surface of the butterfly plate will immediately detach from the sealing surface of the valve seat at the moment of opening. When it is closed from 90 ° to 0 °, only at the moment of closing, the sealing surface of the butterfly plate will contact and press against the sealing surface of the valve seat.

Main external dimensions of electric triple eccentric butterfly valve