Kikawa KH-IC Horizontal Multistage Inverter-Controlled Pump includes microcomputers that adjust motor speed consciously according to the loading pressure, giving abundant and smooth water flow. Because the inverter controller will adjust the motor output with the flow rate, the pump can keep good efficiency in the environment where flow rate changes largely. The rapid start-stop behaviour that usually causes water hammer is also solved by smooth speed changing. KH-IC series also have several protecting mechanisms to ensure every pump can reach its expect working life.