How to prevent low output of the feed water pump
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Our feed water pump is used to supply water to an external system, but it is affected by that external system; as a result, the flow rate of water supplied is often low. However, when there is an inflow of water, the flow rate becomes very high. When recirculation is enabled, such high flow rates cause the current level to rise significantly, though it doesn’t exceed the rated current value. We have tried to contact the external system on many occasions, but we were told that it’s not possible to make any adjustments. Well, there’s nothing we can do – even the company’s management said that no adjustments can be made, so we have to settle for this situation. At present, the pump’s performance may have declined due to its prolonged operation at flow rates below the minimum level, meaning it isn’t as efficient as before. Does anyone else face such problems?
Then you need to adjust the pump recirculation. Using this three-way recirculation valve will effectively solve your problem
Pumps are prone to a decrease in output when used under abnormal conditions