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Material requirements for valves

Material requirements for valves

As the gray cast iron pipe is not recommended gradually, the valve body shall be mainly made of ductile iron, and the brand and the actual physical and chemical testing data of the casting shall be indicated. The valve stem shall be made of stainless steel (2CR13) as far as possible. Large diameter valves shall also be stainless steel embedded valve stems.

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2022

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Technical requirements for valves

Technical requirements for valves

The specification and category of valves shall meet the requirements of pipeline design documents. The model of the valve shall indicate the national standard number requirements. If it is an enterprise standard, the relevant description of the model shall be indicated.

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2022

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Analysis of valve position detection in modern process installation

Analysis of valve position detection in modern process installation

In the process industry, valves and actuators have always been used for the control and transfer of liquid flow. More and more factory engineers hope to get the feedback signals of the current positions of valves, faucets and actuators in the control system. This signal is usually obtained by a proximity sensor built into the switch box or a dual sensor directly mounted on the driver or manual valve. This paper discusses the types of sensors used in the field and new market trends.

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2022

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