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Published on May 9, 2012
High water pressure wastes water—because as pressure increases, so does flow rate. To test this effect, we ramped up the water pressure to 75 psi for Rain Bird PRS sprays and competitive non-PRS sprays. We watched the flow rate of each spray to see how increased pressure affected it.
For the pressure drop test, we raised inlet pressure to 100 psi then dropped it to 50. We looked at the effect on outlet pressure and measured the distance of each spray's throw.