Is it a problem with the flow rate of the return pump?
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After starting the recirculation pump, how can one determine whether it is operating at the proper pressure by checking the gauge on the pump? Is it static head + dynamic head? ?
Yes, first observe the original pressure, then start it up and check if the pressure increases.
The pressure before and after starting the pump is different; the outlet valve of the pump should be opened based on pressure, rather than flow rate. It is also possible to determine the amount of flow by checking whether the temperature at the top of the stripping tower decreases
Observe the reading and fluctuations of the pressure gauge; sometimes, when the backpressure is low, the gauge shows a lower value