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Hydrant flows

Question asked by nrjc86 on Aug 8, 2018
Latest reply on Aug 10, 2018 by cdafd

I recently conducted a hydrant flow test. I used a hand held pitot for the first flow.. I got a reading of 44 psi out of a 2-1/2” outlet.. the second test, I used the little hose monster 1-3/4” pitotless Nozzle and recieved a gauge reading of 28 psi... I would think that the larger diameter flow would give me less on the gauge reading, however one was hand held and one was pitotless... The flows worked out to be 500+ GPM for the 1-3/4” and 1100+ GPM for the 2-1/2” (hand held pitot).. Does this sound like it makes sense? I guess my concern is presenting the flow report to the AHJ and having a higher pressure reading on the larger orfice...