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Old 04-28-2013, 01:33 AM   #1
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Capping an unused line... before or after P-trap?


Hello all,

I have an unused drain line that used to be used for a dishwasher.

The dishwasher now connects to the sink drain, so I need to cap the old drain pipe. It was previously 1/2" copper straight up through the floor to the dishwasher from a 1-1/2" P-trap.

My question is, if I want to cap this section, should I just cut the P-trap off and cap the 1-1/2" pipe, or should I keep the P-trap and cap it at the 1/2" copper?

I'm not sure keeping the trap would serve any benefit, but I thought I ought to ask...

Thanks!

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Old 04-28-2013, 06:47 AM   #2
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Capping an unused line... before or after P-trap?


Best to cut off the P-trap and then cap it----

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Old 04-28-2013, 06:37 PM   #3
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Capping an unused line... before or after P-trap?


Just the answer I was hoping for... thanks!
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