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Net Positive Inlet Pressure
The absolute pressure required at the inlet of the pump to prevent cavitation, noted with suffix "A" for available from the system or "R" for required by the pump. Similar to NPSH.
Net Positive Suction Head
The absolute head required at the inlet of the pump to prevent cavitation, noted with suffix "A" for available from the system or "R" for required by the pump. Similar to NPIP.