The first is the installation direction of the pneumatic ball valve, that is, the position accuracy of the valve, especially the installation of some pressure reducing valves and throttle valves. If the installation direction is wrong, the service life and use effect of the valve will be directly affected. This is a direct impact on the quality of the valve itself, and will even bring greater impact on subsequent operations, It will also cause great damage on the valve, so it is necessary to determine the installation of the valve, and also to know the working principle and operation of the valve, so as to have a correct installation method.

The electric three-way ball valve is gradually evolved from the plug device. Its opening and closing device is a ball. The valve can be opened and closed by turning the ball 90 degrees around the central axis of the valve stem. The main function of three-way ball valve in the corresponding pipeline is to disconnect, reasonably distribute and change the flow direction of the medium in the valve. The V-shaped opening of three-way ball valve can also improve the flow regulation capacity of the device.