If it is a multi-rotation type of rod valve, then it is not possible to install the electric valve on it, so when choosing, special attention should be paid to the stem diameter, to ensure that the maximum stem diameter can be passed. There are also requirements on the internal diameter of the hollow output shaft, which must be larger than the external diameter of the stem of the open stem valve.

2 Operating torque

When looking for butterfly valve manufacturers to buy automatic butterfly valves, it is not only necessary to consider the stem diameter, but also to see how the operating torque is. This is one of the most critical important parameters in the selection of valve electric devices. Electric butterfly valve at work is the most important by stroke, torque or axial thrust size to control, because the use effect of valve electric device, mainly depends on the type of valve, device work is standardized and other aspects, so it is a very key important equipment. So if it is to find the regular screw run manufacturer, choose the right valve electric device, you can to a large extent to prevent overload phenomenon.

3 Output torque of electric device

Special attention should also be paid to the output torque of the electric device of the electric butterfly valve to ensure that it is 1.21.5 times the maximum torque of the valve operation

Therefore, if you want to choose the right electric butterfly valve, then you can find professional and regular butterfly manufacturers when choosing, so as to ensure the quality.