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GPM vs. PRESSURE

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  • GPM vs. PRESSURE

    Would like to know the maximum "Cleaning Pressure and GPM" using the standard sm12802 2-jet wand with both the 1001dx-200 and the 1003dx models. I understand the NO-FLOW condition at 250psig and 500psig respectively. Why the do the "spec's" rate the pumps at no flow conditions? makes no sense... if there is no data for this request, then what does the pressure gauge read for both models? Thanks Don.

  • #2
    water pump drop in pressure.

    the average drop in pressure is 40 to 50% with dual 02 jets. You can also opt for dual 1.5 or 01 jets. Dual 01 jet only have a 15% drop in pressure.

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    • #3
      GPM vs. PRESSURE

      Thanks Don, Do the orifice numbers have any relationship to GPM at a certain pressure?

      Again, Thanks

      jamespw

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      • #4
        GPM VS pressure

        As you make the holes in the jets smaller, the GPM goes down and the cleaning pressure goes up. an 015 tip is 25% smaller than the 02 and the 01 tips are 50% smaller than the 02 tips.

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        • #5
          So are the 03 jets are twice the size of an 02 jet?
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          • #6
            jet size

            50% larger, not 100% larger
            Another reason for large pressure drop off in pressure, is the pump can be starving for water. For example, the water filters are dirty (you have two in these machines). A dirty water filter causes the pump to push out the water faster than it can suck the water into the pump and this causes the pressure to drop. In reality this too is what happens with larger spray jets even with clean water filters.
            Last edited by Donald; January 14, 2012, 06:27 AM.

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