Quote:
Originally Posted by cornemuse
I worked on a small automated sewage treatment plant. After treatment, solids were seperated, dried (relatively), & liquid went through a 'vertical' venturi. Vacuum (after initial calibration) was used to measure volume flowing to holding tank.
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This...
Here's one that measures 0.5 to 5 gallons/minute:
https://pvcpipesupplies.com/f-550-5-5-gpm-50-m-npt-f-55500l.html?gclid=Cj0KCQjw2K3rBRDiARIsAOFSW_7VjwlxZBV7abliaVcOoNTsSrM620txN16Qcvljgv49VFYlIDsfjiAaAi lSEALw_wcB
No pressure gauges needed, just an eyeball or two.