Valve products have been widely applied in petroleum, chemical engineering, nuclear power, metallurgy, electric power, hydraulic power, large coal chemical industry and other industries. Total quantity of valve products is constantly growing. Valve technology is developing and application of valve is also expanding continuously. Valve standards relative to valve products are showing their importance in …
A control valve is a valve used to control fluid flow by varying the size of the flow passage as directed by a signal from a controller.[1] This enables the direct control of flow rate and the consequential control of process quantities such as pressure, temperature, and liquid level. In automatic control terminology a control valve is …
From Wikipedia, the free encyclopedia Cavitation is the formation of vapour cavities in a liquid, small liquid-free zones (“bubbles” or “voids”), that are the consequence of forces acting upon the liquid. It usually occurs when a liquid is subjected to rapid changes of pressure that cause the formation of cavities in the liquid where the …