The curve describes the pump relationship between total head (feet) vs flow (gpm ... that occurs when pockets of air enter the impeller and implode due the change in pressure. The collapse of the air ...

A centrifugal pump that performs well under ... time,” and is illustrated in Figure 2. 2. Pressure decay during a net positive suction head (NPSH) transient event. Cavitation occurs when NPSH ...

Note that the difference between the boiler feed pump head-flow curve and the system resistance curve (Figure 1) provides the basis for the pressure drop available for the drum level control valve.

The more pressure a pump can deliver, the higher the head will ... There, it will be displayed as the flow rate (Q) versus head curve. The flow will have zero or little flow at its maximum head ...

Positive displacement pumps, however, don't run on a curve. Instead, they generate as much head or discharge pressure as they need to overcome the pressure of the system into which they're pumping." ...

Fuel delivered to the head passage by transfer pump pressure splits in several directions ... This provides a compensated idle speed curve and corrects engine idle speed at elevated ambient ...