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http://dx.doi.org/10.3795/KSME-B.2008.32.1.039

Effects of the Blockage Ratio of a Valve Disk on Loss Coefficient in a Butterfly Valve  

Rho, Byung-Joon (전북대학교 기계항공시스템공학부, RICT)
Choi, Hee-Joo (퍼스텍(주))
Lee, Jee-Keun (전북대학교 기계항공시스템공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.32, no.1, 2008 , pp. 39-46 More about this Journal
Abstract
The loss coefficient of the butterfly valve which allows partial opening of the valve at closed position and is applicable to the small-sized pipe system with the diameter of 1 inch was measured for the variation of the valve disk blockage ratio. Two different types of the valve disk configuration to adjust the blockage ratio were considered. One was the solid type valve disk of which the diameter was changed into the smaller size rather than the pipe diameter, and the other was the perforate type valve disk on which some holes were perforated. The results from two types of valve disk were compared to identify their characteristics in the loss coefficient distributions. The loss coefficient and the controllable angle of the valve disk were decreased exponentially with the decrease of the blockage ratio. In addition, the perforate valve disk had the effect on the higher loss coefficient rather than the solid type valve disk.
Keywords
Butterfly Valve; Blockage Ratio; Loss Coefficient;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 0
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