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Down Under use 5000psi.....

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  • #16
    Re: Down Under use 5000psi.....

    here is the gear reduction udor pumps list

    GKC 17/28-GR 4.5 4000 16 HP Gas UD-10 UD-31 49 lbs. GKC 21/28-GR 5.5 4000 20 HP Gas UD-10 UD-31 49 lbs. GKC 26/24-GR 7.0 3500 22 HP Gas UD-10 UD-31 49 lbs. GKC 26/28-GR 7.0 4000 24 HP Gas UD-10 UD-31 55 lbs. GKC 30/20-GR 8.0 3000 22 HP Gas UD-11 UD-3 49 lbs. GKC 30/24-GR 8.0 3500 24 HP Gas UD-11 UD-3 55 lbs. GKC 38/17-GR 10.0 2500 22 HP Gas UD-12 UD-3 49 lbs. GKC 38/20-GR 10.0 3000 24 HP Gas UD-12 UD-3 55 lbs. GKC 42/15-GR 11.5 2200 22 HP Gas UD-12 UD-3 49 lbs. GKC 50/12-GR 12.5 2000 22 HP Gas UD-12 UD-3 49 lbs.
    I have the GKC 38/20-GR 10 gpm 24hp system when I ordered my system it was supposed to be 12 gpm 24hp and they said the psi would be around 2500 but they didnt order me the right stuff and I didnt catch the mistake in time to make them re order.
    Seattle Drain Service

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    • #17
      Re: Down Under use 5000psi.....

      I know it's been posted on this board before, but GPM X PSI divided by 1100 = HP for gas engine.

      10 X 3000 /1100=27.27hp either the gpm or the psi needs to be lower for 24hp engine

      10 X 2600 /1100 =23.6hp,

      OR
      8.7 X 3000/1100=23.7hp

      thats the best you are going to get with 24 hp

      Your original 12gpm 24 hp would have been 2200PSI
      Last edited by VMC; 11-29-2009, 04:38 PM.

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      • #18
        Re: Down Under use 5000psi.....

        I don't work for udor pumps, I just listed the specs they put out and sell their pumps under, if you look at the list they have a 22hp motor listed as the min power source for 3000 psi and 8 gallon a minute. So either the division number of 1100 has some room for changing based on industrial engine vs standard engine? Or they like to fidgit on the specs. Remember math is just a tool to predict the future outcome.
        Seattle Drain Service

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        • #19
          Re: Down Under use 5000psi.....

          Don't know anything about Udor, hear that they are good pumps though.
          Some Mfg, meaning pressure washer mfg, "stretch" the numbers by rounding up for the marketing. An actual 7.5 gpm becomes an 8gpm machine.

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          • #20
            Re: Down Under use 5000psi.....

            No need of use a higher pressure washer.
            lower pressure washer has better performance than higher one.
            http://www.pressurewasherscleaners.com

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            • #21
              Re: Down Under use 5000psi.....

              Originally posted by siyamythew View Post
              No need of use a higher pressure washer.
              lower pressure washer has better performance than higher one.
              Well I don't think that is the case, you need a high GPM to get flow to wash everything but a high pressure combined with it really pulls the hose thru the bends and kills the roots, low pressure washes the roots clean which I don't need.
              Seattle Drain Service

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              • #22
                Re: Down Under use 5000psi.....

                Originally posted by Cuda View Post
                Well I don't think that is the case, you need a high GPM to get flow to wash everything but a high pressure combined with it really pulls the hose thru the bends and kills the roots, low pressure washes the roots clean which I don't need.

                How much GPM and PSI you need
                http://www.pressurewasherscleaners.com

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                • #23
                  Re: Down Under use 5000psi.....

                  I see you guys over there, use 1/8", 1/4" 3/8" and 1/2" hoses. I think our most used hose is 3/16".

                  Our jetters are from 5000psi @ 21ltr/min up to 4300psi at 31ltr/min.

                  With the right nozzles fitted, these jetters will comonly flow through 1/8" in 40mm/50mm drains, 3/16" and 1/4" in 90mm/100mm drains and 3/8" - 1/2" in 100mm/150mm drains.

                  High flow [ 15gal - 150 gal / min ] @2000psi is common in big truck jetters not really used in domestic drains, where as 20ltr/min - 35ltr/min at 4000/5000psi is what we use.

                  Warthog or Rootranger type nozzles. Using the rootranger, a 4000psi jetter becomes 6450psi, so naturally is the choice for root removal and general drain cleaning.

                  Hope this helps.

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