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Cylindrical Gates

Cylindrical valves provide a nearly constant downstream level and are used in connection with an outlet pipe from a reservoir, basin, or chamber-like enclosure. With its special features, the cylindrical valve is ideally suited for short pipelines operating under a head of only a few meters. A typical application is the on the turnout of a downstream-controlled canal from a dam when its sole purpose is to maintain the head water level in the canal irrespective of the flow demand. Applied to sand filters, cylindrical valves enable automatic downstream controlled operation, together with the possibility of equal flow division between the various parallel operating filters, and automatic limitation of the maximum admissible unit discharge, by a technique evolved in collaboration with water treatment specialists.
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