Kaplan turbine is used in the condition with low head which is between 3m and 40m and mid-large flow. It is vertical type with R.C. spiral case or metal spiral case and t could be propeller turbine or Kaplan turbine. Propeller turbine is used in the hydropower plant whose head rangeability is not large. And it has compact structure and will reduce the investment. Kaplan turbine is used in the hydropower plant whose head rangeability is large. And it has complex structure. However the high effective operation zone is large and the average effect is large too. We can provide you all kinds of the Kaplan turbines whose runner diameter is between 0.8m and 4.5m and output is smaller than 50MW.
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