Check valve is a kind of relying on the flow of the medium itself and automatically open and close the valve flap, used to prevent the backflow of the medium of the valve, in a number of fields have a wide range of applications, the following for you to introduce in detail:
Petrochemical field
Process piping system: in petroleum refining, chemical raw material production and other processes, used to prevent the pipeline medium (such as crude oil, refined oil, chemical raw materials, etc.) backflow, to avoid interference with the process, to ensure the stability and safety of production.
Pump export pipeline: installed in the chemical pump export pipeline, when the pump stops running, to prevent the medium in the pipeline backflow back to the pump body, to avoid damage to the pump impeller due to reverse rotation, but also to maintain stable pressure in the pipeline to reduce the waste of media.
Gas conveying pipeline: in petrochemical production, often need to transport a variety of gases, such as hydrogen, nitrogen, oxygen and so on. Check valve can prevent gas backflow, avoid gas mixing to cause explosion and other dangerous situations, but also to ensure that the pressure and flow of gas delivery is stable.
Water supply and drainage field
Municipal water supply and drainage system: In urban water supply pipelines, check valves are used to prevent water from flowing backward to the water source to avoid contamination of the water source.
Building water supply and drainage system: in the building water supply pipeline, check valves are installed in the pump outlet, before and after the water meter and other locations, to prevent water backflow, to ensure the normal water supply. In the drainage pipe, the check valve can prevent the odour and sewage in the pipeline backflow back to the bathroom, kitchen and other places to improve the comfort of the living environment.
Sewage treatment plant: In the process of sewage treatment plant, check valves are used to prevent sewage backflow back to the treatment equipment, to ensure the effect of sewage treatment and the safe operation of equipment.
Power field
Thermal power generation system: In thermal power plants, check valves are used in steam piping, water supply piping and other systems to prevent the backflow of steam or water and ensure the safe operation of the generating unit.
Hydroelectric power system: In hydroelectric power plants, check valves are used on the inlet piping of the turbine to prevent the backflow of water back to the reservoir, which affects the normal operation of the turbine.
Nuclear power plant: In the nuclear island and conventional island system of nuclear power plant, check valves are used to prevent backflow of media and ensure the safe operation of nuclear power plant. Due to the extremely high safety requirements of nuclear power plants, the performance and quality requirements of check valves are also very strict, requiring the use of special materials and manufacturing processes.
Metallurgical field
Iron and steel production system: In the process of iron and steel production, check valves are used in oxygen piping, nitrogen piping, compressed air piping and other systems to prevent backflow of gases and avoid dangerous situations such as explosions.
Non-ferrous metal smelting system: In the smelting process of non-ferrous metals, such as copper, aluminium, zinc and other smelting, check valves are used in the pipeline of all kinds of media to prevent backflow of media and ensure the stability and safety of the smelting process.

Yantai Valtone Valve Co., Ltd.

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liujun@valtone-valve.com

carrie@valtone-valve.com

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