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low flow pump surging
In their pump control bulletin Sundyne is advising to place the first throttling valve as close as possible to the outlet of the pump to avoid "flow surging" ; the liquid volume between pump and valve comes into an oscillation and placing the first valve as close as possible reduces the...- davefao
- Thread
- Replies: 5
- Forum: Pump engineering
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How steep should a pump curve be for vsd
How steep should the curve of a centrifugal pump be for smooth control by a vsd (for different types of system curves )? In our installation we have pumps that are equipped with a restriction orifice to obtain a steep curve , they are on discharge pressure control and they are also operating in...- davefao
- Thread
- Replies: 2
- Forum: Pump engineering
