Regarding the pump flow rate
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The model of this pump is 80YII-60; it is a Y-type horizontal centrifugal oil pump. According to the pump performance table, its flow rate can be 30, 50, or 60 m3/h. May I ask what these three numbers represent? Are they the minimum, normal, and maximum flow rates of the pump?
The flow rate of this pump should be 60 M3/h
The flow rate indicated on the performance table should be the rated flow rate of the pump; this value remains constant for pumps of the same model. You see three different flow rates, which correspond to three different pumps, and these pumps have varying models as well. Go back and take another look!
Bro, different flow rates correspond to different head values; the three different flow rates correspond to three different head values, with the highest flow rate resulting in the lowest head
It refers to three different flow rates corresponding to three different head values; the flow rate is highest while the head is lowest
They represent minimum, normal, and maximum values respectively; if the values exceed these ranges, the pump’s vibration, temperature, or noise levels may exceed the specified standards, increasing the likelihood of failures.
According to standard requirements, this is specified for different head values.
These three values are not the pump’s minimum, normal, and maximum flow rates! What you are looking at is likely a sample of a Y-type oil pump. In pumps of this type, the flow rate in the middle represents the designed flow rate of the pump, that is, the flow rate at which its efficiency is at its highest! The two flow rates at the front and back are the recommended minimum and maximum boundaries for flow rates, as efficiency is higher within this range! In other words, this type of pump is recommended for flow rates between 30 and 60, with 50 being the ideal value ； But the actual usable range of this pump should be 15~65! :)
Thank you to the person above; I think what you said makes a lot of sense. You truly are a pump engineer, a professional. Thanks, I’ve learned it too.