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1

Sunday, March 17th 2013, 5:20pm

PSI and GPM questions

I bought an Orbits pressure gauge at Menards and it is actually reading about 4 or 5 psi higher at the hose bib than the city said our static pressure is. I am assuming I should just use the lower one supplied by the city.I did the bucket test and came up with just over 10 gpm. However, if I use the calculator on irrigation tutorial I come up with 18 gpm (1" copper pipe). Not sure if the 5/8 water meter is affecting it.

Wet_Boots

Supreme Member

Posts: 4,022

Location: Metro NYC

2

Sunday, March 17th 2013, 7:16pm

Any pressure gauge has an accuracy error. Figure at least 3 percent of the highest number on the scale.

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