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Hitachi

Hitachi Industrial Products, Ltd.Pump system

Overview

Speed control saves energy and reduces control power costs.

Power efficiency comparison between the fixed-speed pump and the pump with speed control

Operation power for the fixed-speed pump varies to points D, E, and F and that for the speed control pump varies to points D, C, B. The area colored yellow indicates the saved operation power.

Image: Comparison of operation power between fixed-speed pump and speed control pump
Comparison of operation power between fixed-speed pump and speed control pumps (When volute pump)

Main applications

  • Double-suction volute pump
  • Semi-axial flow pump