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Design of Plug Valves in the Refinery Alkylation Unit

Aug 03, 2023

I. Introduction The catalyst cyanofluoric acid in the alkylation unit is highly toxic and corrosive and has extremely strict requirements on processes, equipment, and raw materials. The device is safe...

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Reason for Defects in Welding Groove of Valves and Pipelines

Jul 29, 2023

After the low-temperature stainless steel globe valve is connected to the pipeline by butt welding, the causes of defects in the heat-affected zone and the base metal area near the valve side of the welding...

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Structural Principle and Performance of Double Plate Butterfly Check Valves

Jul 21, 2023

The double plate butterfly check valve is also a swing check valve, but it is a double-disc valve that closes under the action of a spring. The fluid from bottom to top pushes the valve disc apart. The...

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Selecting Check Valves in Large Seawater Desalination Projects

Jul 12, 2023

Reasonable selection of valves for large seawater desalination projects can reduce material consumption, reduce partial resistance and energy consumption, facilitate installation and reduce maintenance....

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Five Ways to Resist Corrosion of Valves

Jul 05, 2023

1. Coating The coating is the most widely used anti-corrosion method, and it is a kind of anti-corrosion material and identification mark on valves. The coating is also a non-metallic material, which...

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Several Ways to Resist Corrosion of Valves

Jun 25, 2023

Metal valves can be said to be the part that is most prone to corrosion and failure of the key component structure in engineering equipment. Usually, the sealing surface, valve stem, diaphragm, small...

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Key Quality Control for High-pressure Underwater Valves

Jun 15, 2023

Table 1 shows the key quality control in the process of product design, manufacturing and testing for domestic manufacturers of underwater valves. Table 1 Key quality control of high-pressure underwater...

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Requirements for Qualification and Capability of Manufacturers

Jun 10, 2023

In the process of high-pressure underwater valves being made in China, clear requirements were put forward for the qualifications and capabilities of valve manufacturers, and an expert group was invited...

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Development and Engineering Applications of High-pressure Underwater Valves

Jun 07, 2023

Overview A subsea valve is one of the indispensable devices in the development of underwater production systems, and have the characteristics of wide applications, high technical content, high requirement...

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