Tapping Threads in exisiting Risers with Pipe In Place

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by chefwong, Nov 14, 2013.

  1. chefwong

    chefwong New Member

    Messages:
    710
    Location:
    District of Columbia
    Anyone of you ever tap threads onto riser feeds that are in place......

    Option A: Not the Preferred Option just due to where the starting height would be.
    Put Female Copper Adapter and start fresh from the high height of where I would adapt to....

    Option B: Risers in wall of 2nd floor.
    Cut brass risers to preferred height of starting point
    Tap threads on risers while holding the pipe with a pipe wrench
    Hope the *torque* produced does not affect anything downstream


    I have done tons of theading on the vise, but never with pipe in *place* in the walls - all willy nilly in the air
    Last edited: Nov 14, 2013
  2. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,641
    Location:
    Cave Creek, Arizona
    TEchnically, you are using a "thread die" not a "tap", and any plumber has threaded pipes in place at some time in their life. Not an easy task if you are doing it "by hand".
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