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Thread: SUPER SHOWER

  1. #1
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    SUPER SHOWER

    Need help in figuring out how to install Kolhler's DTV shower.
    The problem is that I have a well 190' with 1hp pump which I now find out only delivers 7 gpm, into a Wellxtral WX251. Kohler says I need 21 gpm at 45 psi,
    Any and all advise is sought..thanks
    Static level 42

  2. #2
    quote:Originally posted by SPRESSLER with 1hp pump which I now find out only delivers 7 gpm, into a Wellxtral WX251.
    7 GPM at what depth?

    rancher

  3. #3
    Pump guy speedbump's Avatar
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    Having a static water level that high and a pump that only makes 7gpm doesn't make any sense unless this well is a low yield well and the pump is hanging very deep. If this is the case, you had better take the Super Shower back to the retail store.

    bob...

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  4. #4
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    The well is 199' and the pump is set at 195'. I told him he would need a 2 HP pump to run the shower and to do a well test. He didn't like the idea of putting in a 2 HP pump then finding out the well would still not run his shower. I sent him here because I thought you could help him out with converting his well pump to fill a 300 gallon cistern, and boost from there to his WX251 and the house.

    Cycle Stop Valve Website

  5. #5
    Pump guy speedbump's Avatar
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    Your cistern solution sounds like the only one to me Valveman. It would make the Super Shower work. I guess the next question would be, is there room for the Cistern.

    bob...

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  6. #6
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    Personally I'd go a smaller shower but... how did you measure the 7 gpm?

    If through a boiler drain valve on the pressure tank tee, they are 1/2" or 3/4" and won't deliver near what the 1" or 1.25" line from the well to the tank tee does but...

    What is the diameter of your well? I.E. there are 1.47 gals of water per ft of water in a 6" dia well. 900'*1.47= 1300+/- gals. BUT the pump must be sized to pump water from 900' (+ all elevation to the highest fixture in the house, + your operating cut-out pressure and pressure losses in the plumbing from the pump to the highest fixture in the house; the TDH).

    Since you need 21 gpm JUST for this shower, and they say at 45 psi, you need another pump as has been suggested.

    A heads up here... IF you need water treatment which is most likely, like a water softener, it will have to be large enough (cuft wise) to allow a constant SFR of 21 gpm + whatever other water use gpm while this shower is running, or the resin won't be able to remove all the hardness in your water and then there's little sense in having the softener because you get +/- half of the hardness in your water right through the softener every time the SFR gpm is exceeded.

    Gary
    Quality Water Associates
    www.qualitywaterassociates.com
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  7. #7
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    The system he wants to use the Kohler DTV uses UP TO a maximum of 21 gpm. How much he actually uses would be regulated by how many shower heads. Most shower heads for what he is considering use about 2.5 gpm so three would necessitate 7.5 gpm.
    My question is why is the pump so low? What is the actual water level and refresh rate? Also the system needs 45 psi to operate properly so if he used a 40-60 pressure switch with a CSV set at 50 then he should have the proper pressure, then all he needs to find out is the gpm needed. (flow of the heads)
    I would raise the pump to allow more flow, or am I off base here? I would think a 1 HP gives at least 10 gpm or more so he would be limited to the number of heads to stay within that range. I would think the problem is flow not pressure. This would be an ideal situation to use a CSV, right? wrong?
    Jeff

  8. #8
    Pump guy speedbump's Avatar
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    I like Gary and Jeff would like to know how the flow was measured and the diameter of the well. If the flow was measured at a hose bibb that would explain the low flow. With a 6" diameter well and the right pump he could feasably take a 4 minute shower at 20 some gallons per minute, but that would be the limit without the cistern.

    I would also like to know if this 7 gpm is the flow rate he measured at a valve somewhere or is this the recovery rate of the well?

    bob...

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  9. #9
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    No well test has been done. It is simply a 7 GPM 1 Horse Power submersible. From that depth and pressure it will deliver 7 or 8 GPM. The well might make 21 GPM but, he doesn’t want to replace the pump to find out. That is why I recommended the 300 gallon cistern. And yes it is a perfect application for the CSV. One shower head or all of them and the CSV will hold the pressure steady.

    Cycle Stop Valve Website

  10. #10
    Pump guy speedbump's Avatar
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    Well in that case, the Cistern is the answer.

    bob...

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