What is NPSH and how you identify that for any pump

Question

Accepted Answer

NPSH stands for Net Positive Suction Head. It is the measure of the pressure required at the suction port of a pump to keep the pump from cavitating.

NPSH is important to ensure that the pump does not cavitate, which can cause damage to the pump and decrease its efficiency.
NPSH is calculated by subtracting the vapor pressure of the liquid being pumped from the absolute pressure at the suction port of the pump.
NPSH is affected by factors such as the pump design, the fluid being pumped, and the system's operating conditions.
To identify the NPSH for a pump, you need to know the fluid being pumped, the pump's design specifications, and the system's operating conditions.
If the NPSH available is less than the required NPSH, the pump will cavitate, which can cause damage to the pump and decrease its efficiency.

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