The valve is a control component in the fluid delivery system and has functions such as cut-off, regulation, diversion, prevention of backflow, regulation, shunting or overflow relief. Valves for fluid control systems range from the simplest shut-off valves to the extremely complex self-control systems available in a wide variety of sizes and sizes. Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metals, and radioactive media. According to the material, the valve is also divided into cast iron valve, cast steel valve, stainless steel valve, chrome molybdenum steel valve, chrome molybdenum vanadium steel valve, double phase steel valve, plastic valve, non-standard custom valve material.
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