Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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A Study of the Measurement of the Flow Coefficient Cv of a Ball Valve for Instrumentation

계장용 볼 밸브 유량계수 Cv 측정에 관한 연구

  • Kang, Chang-Won (Gyeognam National University of Science and Technology, Graduate School) ;
  • Yi, Chung-Seob (Korea Lift Collage, School of Lift Engineering) ;
  • Jang, Se-Min (DK-LOK LTD., CO, R&D Center) ;
  • Lee, Chi-Woo (Gyeongnam National University of Science and Technology, Automotive Engineering)
  • 강창원 (경남과학기술대학교 대학원) ;
  • 이중섭 (한국승강기대학교 승강기공학부) ;
  • 장세민 (디케이락 주식회사) ;
  • 이치우 (경남과학기술대학교 자동차공학과)
  • Received : 2018.09.06
  • Accepted : 2018.09.18
  • Published : 2019.03.31
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Abstract

The results of the measurement of the flow-rate coefficient (Cv-value) and the analysis of a small ball valve are summarized follows. The Cv-values of 1/2-, 3/4- and 1-inch ball valves were measured using a flow-rate measurement test. The manufacturer obtained the Cv-value using a theoretical calculation method. The new experimental measurement and analysis method yielded more reliable results. In addition, the Cv value obtained through numerical analysis was almost identical the value provided by the manufacturer, which was based on experimental results. A Study on Flow Analysis results are all similar appearances as the reliability of the results.

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References

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