Technical Articles

Selection Principles of Valve Internal Parts’ Materials

• May Sat, 2017
• Hits: 31

API600 Standard gives the definition of a gate valve's internal parts, which refers to the valve stem, the sealing surface of the valve seat, the sealing surface of the valve plate, the upper...

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Advantages and Practical Applications of Double Block & Bleed Ball Valves

• May Mon, 2017
• Hits: 40

In petroleum, gas, petrochemical, electric power and other industries of harsh production conditions, pipelines and instrumentation valves often need to have the DBB function to meet the...

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The Structural Characteristics of Fully Welded Ball Valves

• May Sat, 2017
• Hits: 55

The Fully Welded Structure The ball valve body is made by welding 6 parts of forged shells after assembling them. The structure of a ball valve is compact and makes the ball valve an integral whole....

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Rising Stem Gate Valve & Non Rising Stem Gate Valve

• Feb Fri, 2017
• Hits: 40

According to different driving mode, rising stem gate valve implements opening or closing by using hand wheel drive the nut to make stem linearly up and down. Non rising stem gate valve is opened or closed...

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