amount of water coming in

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by steveleewonder, Jun 30, 2009.

  1. steveleewonder

    steveleewonder New Member

    Joined:
    Oct 12, 2008
    Hello all...
    I have a question on water amount depending on split point.
    2inch city water line comes into building, and it splits to another 2inch line(A) by "T" connection, and runs continuously to 2inch water supply line(B).
    line "A" has 20 water outlet such as sink, toilets, kichens etc..., and line "B" has 40 water outlets..., "B" water line(group) use(spend) double amount of water than line "A". But sometimes, "B" experience lack of water( pressure drop, amount of water smaller) due to water usage increase in "B" group. my question is if line "B" and "A" swap each other, then it makes any difference on water amount(pressure)? or same? my goal is to improve water shorage situation only in "B" group.
    Thanks,
     
  2. kingsotall

    kingsotall Plunger/TurdPuncher

    Joined:
    Aug 17, 2008
    Occupation:
    Hand copper part cleaned ready to go
    Location:
    Flagstaff, AZ Sitting on an upside down 5 gallon b
    Guess I'll take a stab, what's the water pressure¿
     
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  4. Doherty Plumbing

    Doherty Plumbing Journeyman & Gas Fitter

    Joined:
    Jun 22, 2009
    Occupation:
    Red Seal Journeyman Plumber & Licensed Gas Fitter
    Location:
    Penticton, BC
    How long is the line?

    And I'd need to know exactly what kind of fixtures, and how many, are being served.

    Then I can tell you if the line is undersized.

    Also if the 2" line rises vertically I'd need to know how high it goes because you do have a pressure loss due to the height.

    However... assuming the line is undersized you can correct this problem by installing a pressure tank in the system. This will help with the amount of water available and it will also help keep the pressure up.
     
  5. hj

    hj Moderator & Master Plumber Staff Member

    Joined:
    Aug 31, 2004
    Occupation:
    Plumber
    Location:
    Cave Creek, Arizona
    line

    how would you swap lines A & B? there are too many unknowns to even try to guess how to equalize the pressure
     
  6. kingsotall

    kingsotall Plunger/TurdPuncher

    Joined:
    Aug 17, 2008
    Occupation:
    Hand copper part cleaned ready to go
    Location:
    Flagstaff, AZ Sitting on an upside down 5 gallon b
    Definitely not a topic that equates to a forum. These come around from time to time. Can't quite remember the last one but it was some months ago and on a scale with this one.
     
  7. steveleewonder

    steveleewonder New Member

    Joined:
    Oct 12, 2008
    40psi under line "B" group....., don't know pressure on line "A", guess same 40psi
     
  8. steveleewonder

    steveleewonder New Member

    Joined:
    Oct 12, 2008
    I am not asking about "undersized", I am asking if I change line A with Line B, any difference??
     
  9. steveleewonder

    steveleewonder New Member

    Joined:
    Oct 12, 2008

    cut the two pipes line "A" and "B", about 1' high from split point, then connect them by cross-way( connect previous A's split point(T-connection point) to line "B"'s uppper line, line "A"'s upper line to previous line "A"'s down-portion...), so that line "B" split first, then runs to line "A"
     
  10. steveleewonder

    steveleewonder New Member

    Joined:
    Oct 12, 2008
    this is new topic and I never asked this kind question.
     
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