Valve & Fitting head loss 데이터

 밸브와 피팅의 Head loss 데이터 입니다. 
 
** 참고문헌 : Hydraulic Institute, 1961; Perry 4th Ed Table 5-19
 
Equivalent number of velocity head, Ki (U2/2g)

첨부자료

 

Headloss.xls

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Pipeline fittings	Average
Flanged 45 deg regular elbow	0.35
Flanged 45 deg long elbow	0.20
Flanged 90 deg regular elbow	0.35
Flanged 90 deg long elbow	0.25
Flanged 180 deg regular bend	0.35
Flanged 180 deg long bend	0.25
Pipe inlet	1.00
Square edged inlet	0.50
Bell shaped inlet	0.05
Flanged Tee - through flow	0.16
Flanged Tee - branch flow	0.70
Gate valve - open	0.17
Gate valve - 3/4 open	0.90
Gate valve - 1/2 open	4.50
Gate valve - 1/4 open	24.00
Globe valve - open	6.40
Globe valve - 1/2 open	9.50
Diaphragm valve - open	2.30
Diaphragm valve - 3/4 open	2.60
Diaphragm valve - 1/2 open	4.30
Diaphragm valve - 1/4 open	21.00
Angle valve -open	3.00
Butterfly valve - 5 deg	0.24
Butterfly valve - 10 deg	0.52
Butterfly valve - 20 deg	1.54
Butterfly valve - 40 deg	10.80
Butterfly valve - 60 deg	118.00
Check valve - swing	2.00
Strainer - basket	1.20