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See Chinese contents: GB 19762-2007 GB 19762-2007: The minimum allowable values of energy efficiency and evaluating values of energy conservation of centrifugal pump for fresh water
This Standard specifies basic requirements, pump efficiency, the minimum allowable values of energy efficiency, the target minimum allowable values of energy efficiency, and evaluating values of energy conservation of centrifugal pump for fresh water. This Standard is applicable to single-stage single-suction, single-stage doublesuction and multi-stage centrifugal pumps for fresh water.
