how to I cap off a cast iron water line?

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Old 09-13-09, 04:43 PM
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how to I cap off a cast iron water line?

I have an old tub in my basement that is no longer usable (100 year old). The faucet has started to leak. since i no longer use the tub, i just want to cut off the pipes that go to it and cap them off .. the pipes are all expose and iron (not copper) .. what is the best way to cap off the cold and hot water lines? Can i use one of those black flexible caps and use one of those ring thingys around it to make it tight? (sorry for not knowing the proper terms) would that stand the water pressure behind it? ty.
 
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Old 09-13-09, 05:14 PM
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They are not cast iron. They are steel. You need to trace them back to a place where they are screwed in, turn off the water, remove them using a pipe wrench, and screw in a plug. You may also be able to take them back to a coupling, remove the coupling and screw on a cap. Use pipe dope or Teflon tape.
Can i use one of those black flexible caps and use one of those ring thingys around it to make it tight?
No. those are for non-pressurized drain lines.
 
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