This, of course, is one of his great economic values in this society. In addition, we should also know that it can provide a more ambitious goal for the development of social power and promote the powerful combination of industrial production and modern science and technology, which has a great impact on the development of industry and the development of the entire scientific and technological force. Therefore, the social value of this kind of pneumatic diaphragm pump is very obvious.

When the electric ball valve is in a good open position, the butterfly plate thickness is the only resistance when the medium flows through the valve body, so the pressure drop occurring through the valve is very small, so it has good flow control characteristics. The electric ball valve has two sealing types: elastic seal and metal seal. For elastic sealing valve, the sealing ring can be embedded on the valve body or attached to the periphery of the butterfly plate. The valve with metal seal has a longer service life than the valve with elastic seal, but it is difficult to achieve a good seal. Metal seals can get used to higher working temperatures, while elastic seals have the disadvantage of being constrained by temperature. Assuming that the electric ball valve is applied as flow control, it is important to accurately select the size and type of the valve.