Description: relationship between the pump power input and the rate of flow at given operating/rated conditions of speed and liquid; Name: pump power input curve
Description: relationship between the net positive suction head required and the rate of flow at given operating conditions of speed and liquid; Name: Pump power input curve
Description: output variable of the controlling element, which is deducted from the control difference variable and is also the input variable of the actuator; Name: controller output variable