Pump and characteristic curve
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When the parameters of the pump are returned after a purchase inquiry, characteristic curves are required for process confirmation; the supplier responded that the pump has not yet been manufactured, and the curves provided were only approximate and not accurate. So, was the characteristic curve there first or the pump? If the characteristic curves aren’t accurate, then is it not necessary to look at them at all? I seek advice from fellow sailors!
The performance curve of the pump is determined during design, and it is mainly influenced by the blade profile and the clearances between various components. The process described by the manufacturer and what is actually stated are not the same thing. The process requires the performance curve from theoretical design, while the manufacturer talks about the actual testing and cleaning of the equipment.
Each pump comes with a performance curve, which is generated during its factory testing. The pump performance curve provided before procurement is for another type of pump; it represents the parameters under standard conditions and can be used as a reference.
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