Technical Articles

Analysis of Corrosion of Plug Valve Lining

• May Sun, 2023
• Hits: 18

The reasons for the damage to the inner liner when the ordinary PTFE-lined plug valve is used in the self-circulation pipeline of the synthesis reactor of the acetic acid system were analyzed, and the...

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Analyzing the Distribution of Hardness of Ball Valve Core Coatings

• Apr Sun, 2023
• Hits: 6

1.1 Dimensional changes of the ball core before and after cladding The size of the ball core changed significantly before and after cladding, the sphericity increased to 10 to 20 times that before cladding....

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Problems in the Distribution of Coating Hardness of Ball Valve Cores

• Apr Mon, 2023
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1. Overview A ball valve is one of the most important valves in the process industry. The medium pressure difference it allows to pass through is great, and it can be used in a wide range of environments....

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Triple Eccentric Metal Seated Butterfly Valves

• Mar Fri, 2023
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A triple eccentric metal seated butterfly valve is a regulating valve with a simple structure. Butterfly valves can be used to control various media such as air, water, steam, various corrosive media,...

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Measures to Prevent Failure of Strength of Lead Brass Valve Shells (Part two)

• Mar Mon, 2023
• Hits: 5

4. Specifications for the annealing process When the hot forging shell material of the lead brass valve undergoes plastic deformation, there will be residual stress, and there will also be stress inside...

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Measures to Prevent Failure of Strength of Lead Brass Valve Shells (Part one)

• Feb Thu, 2023
• Hits: 2

Summary From the aspects of the grade selection and composition control of the raw material, hot forging and specifications of annealing processes, and installation precautions. Various measures to prevent...

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The Sealing & Principle of Triple Eccentric Metal Seated Butterfly Valves

• Feb Tue, 2023
• Hits: 7

The sealing and principle As a control part in the pipeline, a valve plays a role in controlling and regulating the medium in the pipeline no matter what structure it is in, so there are special...

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Structure of Triple Eccentric Metal Seated Butterfly Valves

• Jan Fri, 2023
• Hits: 7

With the development of the national economy, the demand for large-diameter valves has increased, and the requirements for pressure, temperature, sealing, corrosion resistance, and reliability have also...

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Double Disc Butterfly Check Valves

• Jan Mon, 2023
• Hits: 28

The double-disc 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. The double-disc...

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Stainless Steel Ball Valves

• Dec Thu, 2022
• Hits: 6

The stainless steel 304 ball valve is easy to open and close, small, and its sealing, structure, reliability and maintenance are far superior to those of stainless steel ball valves, which is widely used...

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Carbon Steel Globe Valves

• Dec Sat, 2022
• Hits: 5

Carbon steel globe valves are mainly used to cut off, distribute and change the flow direction of media in pipelines. Applications Carbon steel globe valves are widely used in water treatment equipment,...

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Carbon Steel Gate Valves

• Nov Tue, 2022
• Hits: 6

As a kind of gate valve, a carbon steel gate valve can be divided into wedge gate valves and parallel gate valves according to the sealing surface. Wedge gate valves can be divided into single wedge gate...

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The Analysis of the Sealing Force of Titanium Alloy Metal Seated Ball Valves

• Nov Mon, 2022
• Hits: 41

After calculating the sealing force of the titanium alloy metal seated ball valves with a size of 10 inches and pressure 300LB, the finite element analysis for sealing structure of seats is carried out...

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Sealing & Calculation of Sealing Force of Titanium Alloy Metal Seated Ball Valves

• Oct Wed, 2022
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The sphere and valve seat of the ball valve are generally made from titanium alloy due to process characteristics of the PTA device such as high temperature, high pressure and corrosion, and a metal hard...

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Titanium Alloy Hard-sealed Ball Valves for PTA

• Oct Sat, 2022
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PTA is ethylene terephthalate, which is mainly used in the production of polyester. Polyester is the most important variety of synthetic fibers, accounting for nearly 80% of the world's total output...

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Practice and Analysis of DBB Valves for Tank Valves (Part Two)

• Sep Sat, 2022
• Hits: 11

2.2 Closing of the tank root valve (DBB) and opening of the operating valve (gate valves) According to the source of unloading, the pipeline for receiving oil for the tank usually has two or more channels....

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Practice and Analysis of DBB Valves for Tank Valves (Part One)

• Sep Mon, 2022
• Hits: 15

Abstract: There has been a controversy in the industry on the use of light slab gate valves or DBB valves at the root of the storage tank for a long time. Combine the actual application of the oil depot...

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The Sealing Forms and Principles of Power Station Valves

• Aug Fri, 2022
• Hits: 12

With the continuous progress of science and technology and the rapid development of the social economy, all walks of life in China have also faced new opportunities and new challenges. The power station...

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Test Methods of Reliability of Valves

• Aug Fri, 2022
• Hits: 12

According to different valve types and different use positions of marine valves, their stress sources are different. Taking the most widely used globe valves among marine valves as an example, the reliability...

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The Main Failures of the Valve

• Jul Fri, 2022
• Hits: 5

A marine valve is a common mechanical product in marine products. The failure of valves directly affects the normal operation of system equipment, and even leads to catastrophic consequences. Therefore,...

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