Simply put, pump net positive suction head (NPSH) is the excess head (or pressure) exerted on the pump’s suction that keeps the liquid from boiling.

The available net positive suction head provided to a boiler feedwater pump can drop enough during a pressure excursion to cause cavitation and damage to the pump’s internal parts.

After all, required net positive suction head (NPSH) increases as flow increases (Fig. 1).” “Let’s spray cold water on the suction line and pump case, Joe.

Improvement in performance on the suction side of the pump can be achieved when the system is an open system, e.g., condenser water system serving an open cooling tower and the available net positive ...

Velocity, head, pressure When I was 12 years old, I'd been told the water pressure in our bathroom was 40 psig. Never one to trust hearsay, I devised an experiment.

Pump selection depends on sludge volume flow, pump head/discharge pressure, inlet pressure or net positive suction head, and the sludge rheological properties. The only way to make reliable estimates ...

The difference is the available net positive suction head (NPSHa) at pump inlet. During a deaerator pressure transient, the actual pressure at pump suction decreases as the deaerator vapor ...