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SylvanLMP.
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MasterPlumbers
I am remodeling my bath which is on a concrete floor. I am needing to tie new drain lines to an old shower drain which has its own trap. My question is if I put any new traps before this old trap will I have any problems or should I eliminate the old trap.
Darrell
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You must without ANY doubt remove the old trap.
The reason you do not want double trapping is Air bound drainage systems cause stoppages and a heck of a breeding place for bacteria as you no longer have the proper scouring action.
You cannot snake a line through TWO P traps.
Your slowing the drainage line with a lot of restriction by using one trap TWO forget about it.
Have a GREAT ONE
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