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Q & A – What is the difference between NPSHa and NPSHr ?

Q & A – What is the difference between NPSHa and NPSHr ?

What is the difference between NPSHa and NPSHr ? Nett Positive Suction Head AVAILABLE (NPSHa) is the absolute pressure at the pump inlet and is calculated by the system designer. Nett Positive Suction Head REQUIRED (NPSHr) is the minimum pressure required by the pump...
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