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The Knowledge of Valve

 

The valve is a device used to control the direction, pressure, and flow of a fluid in a fluid system. It is a device that allows the medium (liquid, gas, powder) in pipes and equipment to flow or stop and can control its flow.

The valve is a control component in the pipeline fluid delivery system. It is used to change the cross-section of the passage and the direction of medium flow.  Valves for fluid control, from the simplest globe valve to the various valves used in extremely complex automatic control systems, have a wide variety and specifications. The nominal diameter of the valve ranges from a very small instrument valve to a diameter of 10 m.  Valves for industrial piping.  It can be used to control the flow of various types of fluids such as water, steam, oil, gas, mud, various corrosive media, liquid metals and radioactive fluids. The working pressure of the valve can be ultra high pressure from 0.0013MPa to 1000MPa, and the working temperature can be  c-270 ?? ultra-low temperature to 1430 ?? high temperature.

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