How to choose butterfly valves
The disc of a butterfly valve has an axis rotating at the position of the valve seat, and the angle it rotates determines the opening and closing degree of the valve. Below, we will introduce how to choose an electric butterfly valve.
01 Valve stem diameter
If it is a multi turn open stem valve, it is not possible to install an electric valve on it. Therefore, when selecting, special attention should be paid to the diameter of the valve stem to ensure that it can pass through the maximum diameter of the valve stem. There are also requirements for the internal diameter of the hollow output shaft, which must be larger than the external diameter of the stem of the rising stem valve.
02 Electric device output torque
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 times the maximum operating torque of the valve.
The most important control of electric butterfly valves during operation is through the size of stroke, torque, or axial thrust. The effectiveness of the electric device of the valve 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.