electric ball valve evolved by the cock. Its opening and closing parts like a sphere. Ball around the stem axis of rotation, achieve the goal of opening and closing. Ball Industrial Valves is mainly used for cutting, distribution, and change the flow direction of the medium inside the pipeline. V-shaped opening ball valve has a good flow regulating function. Ball valve is not only simple in structure, good seal performance, and small volume, light weight, less material consumption, small installation size, small drive moment, simple operation, easy to realize rapid opening and closing. Ball valve is one of the valves varieties development quickly in recent decades. Especially in the United States, Japan, Germany, France, Italy, and Britain and other western developed countries, the ball valve has a very wide range of use. Compared with other valve, ball valve has the following advantages: a. Fluid resistance is small. All ball valve is one of the least resistance of fluid valve valve. Even shrink ball valve, the fluid resistance is small. 2. The switch's fast and convenient. As long as the valve stem rotated 90 degrees, ball valve will complete the opening and closing action, and it's easy to achieve rapid opening and closing. 3. Sealed performance is good. Ball valve seat sealing usually use the elastic materials such as teflon, easy to guarantee seal, ball valve sealing force with medium pressure increases. Four. Stem seal and reliable. Ball valve opening and closing, the valve stem rotation only, is not easy to damage the valve stem packing seal, Industrial Valves stem reversely seal sealing force with medium pressure increases. 5. Ball valve opening and closing the need to rotate 90 degrees, easy to realize automatic control and remote control. Pneumatic devices could be prepared for, electric equipment, hydraulic equipment, pneumatic hydraulic device or electro-hydraulic device.

os&y gate valve ductile iron gate valve is generally used to cast iron valve.
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