Operation of pump unit number and type selection, calculation of the basic work at the same time, based on the pump, pipeline and factory capacity, according to map daily consumption of water, every year, fire conditions, operation mode of the optimal pump, water supply engineering.Choose a combination of pump to ensure the minimum residual pressure value in all pump working mode, allowing regulation capacity, regulation of RPM, change the number and type of pump, the calculation time less to change jobs or subordinate changes in working conditions of the roller
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