Shower supply size question

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by reglilly, Apr 8, 2009.

  1. reglilly

    reglilly New Member

    Apr 7, 2009
    Saratoga Springs, NY
    Hi - This is my first time posting -- I'm sure I'll be back!

    I'm finishing a stubbed-in bathroom with tub, WC, vanity, and a shower that I'd like to have jet sprays and shower head. The 2 jets are 2.5 GPM. The plumbing store salesman said I would need a 3/4" diverter to supply these. The two supply lines are 1/2". Does that mean that I would have to replace the supply lines to the shower with 3/4" (which could be a huge pain depending on how far back the 3/4" line is) or do two 1/2" lines combine to make up the required 3/4"?

    Sorry if this is a stupid question. I'm learning, though!

  2. hj

    hj Moderator & Master Plumber Staff Member

    Aug 31, 2004
    Cave Creek, Arizona

    No. Your piping will work fine for that purpose.
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