2" city main to GPM

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by steveleewonder, Mar 8, 2009.

  1. steveleewonder

    steveleewonder New Member

    Messages:
    25
    2" water supply line with 50psi from city main to building, how much volume of water it flows, IOW, how much GPM this line produce under 50psi?
    and same pipe with 40psi and 60psi, how much GPM? thanks
  2. SewerRatz

    SewerRatz Illinois Licensed Plumber

    Messages:
    1,705
    Location:
    Chicago, IL
    I assume its 2" copper. The good folks at copper.org have a Calculator and handbook for 5 bucks. I used to have this handy but lent it out and never got it back. Here is the link to all their resources. The one you are looking for is A4005: Copper Tube Sizing Calculator and Handbook http://64.90.169.191/publications/pub_list/plumbing.html
  3. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,815
    Location:
    Cave Creek, Arizona
    flow

    The length of the pipe is also critical to make that measurement.
  4. nhmaster

    nhmaster Master Plumber

    Messages:
    3,189
    Location:
    S. Maine
    All of the plumbing code books have this information in them.
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