Tapping Threads in exisiting Risers with Pipe In Place

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Chefwong

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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
 
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hj

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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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