Month: November 2021

concentric butterfly valve
Peter Lee

Valve installation-Technical requirements

In the flow control system, valve is a device used to control the direction, pressure, and flow of the fluid. During the construction process, the quality of valve installation directly affects the normal operation in the future, so the construction unit and production unit must pay great attention to it.

Now let we talk about technical requirements for valve installation

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dual plate check valve
Peter Lee

Valve and accessories maintenance manual, worth collecting!

Section 1 Maintenance of the valve during transportation 

The valve hand wheel is damaged, the valve stem is bent, the bracket is broken, and the flange sealing surface is bumped and damaged, especially the damage of the gray cast iron valve. A considerable part of it occurs in the valve transportation process. The reason for the above-mentioned damage is mainly caused by the poor understanding of the basic common sense of the valve by the transportation personnel and the brutal loading and unloading operations.

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u type butterfly valve dn2200
Peter Lee

Valve operation-your method is not necessarily right!

Manual valve is a kind of valve commonly used in equipment and devices, it is operated by handle and hand wheel. In general, clockwise rotation of the handle and handwheel is defined as the closing direction, and counterclockwise rotation is defined as the opening direction. However, the opening and closing direction of some valves is opposite to the above, so please pay attention to check the opening and closing signs before operating

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st diaphragm valve painting process 2
Peter Lee

Valve purchase -technical requirements that must know

Valve working pressure is required to be greater than or equal to the working pressure of the pipeline. Under the premise of not affecting the price, the working pressure that the valve can withstand should be greater than the actual working pressure of the pipeline; any side of the valve should be able to withstand 1.1 times the working pressure of the valve when the valve is closed Value without leakage; when the valve is open, the valve body should be able to withstand 1.5 times the valve working pressure.

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check valve
Peter Lee

10 misunderstandings of valve installation, easy to make mistakes!

With the rapid development of technology and innovation, valuable information that should be delivered to industry professionals is often covered up today. Although shortcuts or quick methods can well reflect short-term budgets, they show a lack of experience and overall understanding of what makes the system viable in the long run. Based on these experiences, the following (without special importance) lists 10 common installation mistakes that are easy to overlook:

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