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|valve = ball|
|Kind of quarter-turn valve design involving a rotating perforated ball to regulate or ensure complete isolation of high pressurised fluids in a pipeline.|
|Used on these elements|
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A Ball valve is designed for high pressure use cases. It involves a perforated quarter-turn ball to regulate or ensure complete isolation of fluids in a pipe.
|Switzerland||Hydroelectric power plants usually got valves at bottom of their penstocks carrying water down to turbines due to the heavy water pressure. Such a valve is mainly fully opened or fully closed depending of the plant operational status. It is located next to a pelton turbine at the end of the penstock. Here is how a ball valve closes :|
|France||The valve is actually underground and ensure safety of the rising pipeline on the background. Only its head is visible from the ground surface.|