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1. Stem diameter

One situation is that a multi turn rising stem valve cannot be installed on top of an electric valve, so special attention should be paid to the diameter of the valve stem when purchasing, ensuring that it can pass through the * * * valve stem diameter. 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 rising stem valve.

2. Operating torque

When purchasing electric butterfly valves and looking for a butterfly valve manufacturer, the first consideration is the diameter of the valve stem, and secondly, the operating torque. This is the most crucial parameter in our selection of valve electric devices. Electric butterfly valves are mainly controlled by the size of stroke, torque, or axial thrust during operation. The effectiveness of the valve's electric device is mainly determined by the type of valve and whether the device operates in a standardized manner. Therefore, it is a crucial and important equipment. So if you find the right legitimate butterfly valve manufacturer and choose the right valve electric device, you can greatly 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, ensuring that it is 1.2-1.5 of the operating torque of valve.