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Valve introduction

Update:13-12-2018
Summary:

Valves are piping accessories used to open and close pi […]

Valves are piping accessories used to open and close piping, control flow, and regulate and control the parameters (temperature, pressure, and flow) of the medium being transported. According to its function, it can be divided into shut-off valve, check valve, regulating valve and so on.

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 (201, 304, 316, etc.), chrome molybdenum steel valve, chrome molybdenum vanadium steel valve, dual phase steel valve, plastic valve, non-standard custom valve.

Valve introduction

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

The valve is a control component in the pipeline fluid delivery system. It is used to change the passage section and the flow direction of the medium, and has the functions of diversion, cutoff, throttling, check, diversion or overflow relief. Valves for fluid control, from the simplest shut-off valves to the wide variety of valves used in extremely complex automatic control systems, the variety and specifications of the valve, the nominal diameter of the valve from a very small instrument valve to a diameter of up to 10m Valves for industrial piping. It can be used to control various types of fluids such as water, steam, oil, gas, mud, various corrosive media, liquid metal and radioactive fluid. The working pressure of the valve can be from 0.13MPa to 1000MPa, and the working temperature can be C-270 ° C ultra-low temperature to 1430 ° C high temperature.

The valve can be controlled by various transmission methods, such as manual, electric, hydraulic, pneumatic, turbo, electromagnetic, electromagnetic hydraulic, electrohydraulic, gas-hydraulic, spur gear, bevel gear drive, etc.; can be under pressure, temperature Under the action of other forms of sensing signals, according to predetermined requirements, or simply open or close without relying on the sensing signal, the valve relies on a driving or automatic mechanism to cause the opening and closing member to be lifted, slid, swiveled or swiveled. Movement, thereby changing the size of its flow path area to achieve its control function.

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