Pipeline ancillaries Disc, split disc and wafer check valves
10
Pressure loss diagram
Pressure loss in bar
0.145
0.290
0.725
1.45
2.90
7.25
14.5
Pressure loss in bar
Pressure loss diagram with open valve at 20 °C (68 °F). The values indicated are applicable with horizontal flow. With vertical flow, insignificant deviations occur only within the range of partial opening. The curves given in the chart are valid for water at 20 °C (68 °F). To determine the pressure for other fluids the equivalent water volume flowrate must be calculated and used in the graph.
10.5 41
x
w =
w = Equivalent water volume flow in l/s or m ³ /h = Density of fluid kg/m ³ = Volume of fluid l/s or m ³ /h
Where:
TI-P601-32 CMGT Issue 10
Page 7 of 10
DCV10 Stainless Steel and DCV10C Carbon Steel Centrally Guided Disc Check Valves
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