Submersible well pump sizing

Discussion in 'Pumps and Tanks Well Forum & Blog' started by Dave D, Apr 13, 2011.

  1. Dave D

    Dave D New Member

    Sep 8, 2010
    I am replacing the two pipe jet pump I have now with a submersible pump at our home. It is a 60' cased well in a pit. I will be adding a pitless adaptor and a well extention to bring it above ground. Ive read a lot about sizing the pressure tank for draw down and pump cycling etc so Im pretty good there. Here are my questions.

    What is the difference between a 110 and a 220 submersible pump in this application providing the GPM are similar. Is one prefered to the other, longevity, cost of use etc?

    Currently Im getting about 1 gallon a minute out of my kitchen faucet with no aerator and about the same on teh second floor shower with no head. What is a typical flow from these?

    Is there big difference between 30/50 and 40/60? currently I have 20/40 and its a not muc more than a drizzle in the upstairs shower.

    Any recomendations in this case? 3 bedroom house two bath and I will be installing a lawn irrigation system in the future and a whole house active carbon filter to remove the small amounts of radon we have. I was thinking a 7 or 10 gpm pump at 40/60 with the appropriate pressure tank for draw down and 1 minute or more between cycles...

    Thanks gang
  2. Dave D

    Dave D New Member

    Sep 8, 2010
    noone has any thoughts on this?
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  4. gsaunders

    gsaunders New Member

    Apr 13, 2011
    I am basically taking crash courses on wells, pumps, and the related due to necessity so let me pass several sites I ran across with helpful info. There is a box called helpful info with links. Check that out. It has some calculation tools. Look down in specifications and resources for some good general info.

    There are a few other sites that I can't find the links right now, but this may provide some helpful info.
  5. valveman

    valveman Moderator Staff Member

    Mar 15, 2006
    Pump Controls Technician
    Lubbock, Texas
    A 10 GPM, 3/4 HP will deliver 12 GPM at 50 PSI average with a 40/60 switch. Anything bigger thank ½ HP is going to be 230 volts. If your well can make this much water, it would be plenty for a 3 bed, 2 bath house. Pressure tank sizing to reduce cycling is a thing of the past. You should check out this web page to see how newer type systems work.
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