Please advise on the selection of compressor surge valve.
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The three figures in the attachment are about selecting anti-surge valves. Please give me some advice on how to read these documents and how to choose a valve.
The first picture is a data table for valve selection. The basic parameters of the valve are determined based on the parameters inside, including flow, pressure, gas properties, molecular weight, etc. The second picture shows the requirements of the valve flow characteristic curve. It can be seen from the picture that the flow characteristic curve is divided into 5 segments, and the requirements of each segment are also different. This requires that the valve core design must be based on this flow characteristic curve, which is a non-standard design. The third picture is the working curve of the compressor and the flow curve of the valve. From the picture, we can see the surge line, surge control line and typical operating point of the compressor. The working curve of the valve must keep the compressor away from the surge control line to prevent the compressor from surge.