The hump in the performance curve of API610 pumps
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Does API610 specify that performance test curves must not have humps?
The API 610 standard itself does not explicitly stipulate that humps are not allowed in the performance test curves. This standard primarily specifies the requirements for the design, manufacturing, and acceptance testing of pumps, without providing detailed regulations regarding the shape of the performance curve. In practical applications, the hump phenomenon in the performance curve can be caused by various factors such as hydrodynamic instability; it is necessary to conduct a detailed analysis to determine its impact on pump performance. .
This post was last edited by shashaloveyou99 on 2024-8-20 08:05. Yes, in version 12’s 6.1.13, a) the pump head curves shall be continuously rising to shutoff； b) The head rise from the rated point to the shut-off point shall be at least 10%, with a continuous rising curve; moreover, the increase from the rated point to the shut-off point shall not exceed 10%. However, there is a ● before this requirement, indicating that it needs to be specified in advance (in the request for quotes/tender documents/technical agreement).
Uh, it’s at least 10%–I typed that wrong