Abstract: This paper introduces in detail the key points in the selection of anti-surge valve for centrifugal compressor from the aspects of the type selection of anti-surge valve, the calculation and selection of CV value, and the quick opening time and flow characteristics of anti-surge valve. Based on practical engineering, inappropriate CV valve and long quick opening time may cause surging problems. Some feasible solutions are put forward, providing guidance for the rational selection of anti-surge valve for centrifugal compressors.

Key words: anti-surge valve, CV value, quick opening time, dynamic simulation