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Old 02-18-2011, 04:17 PM   #1
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Replacing shut off valves

I need to install a new bathroom vanity and sink. The old sink will come out completely, but the shut off valves are rusted badly. The Valve is attached to a 1/2 galvanized pipe. Is there something I can soak the valve and connection with to assist with removal. My fear is that the galvanized pipe will break when I attempt to remove the valve. Any suggestions?


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Old 02-18-2011, 04:27 PM   #2
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Replacing shut off valves

Cut it all out get rid of the galvanized along with the valves install PVC or copper whatever.


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Old 02-18-2011, 04:32 PM   #3
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Replacing shut off valves

you might try soaking them really good with a penetrating oil. I use Knockr'loose or Ballistol, or even wd-40. I'd soak "em and let them sit overnight.
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Old 02-18-2011, 06:17 PM   #4
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Replacing shut off valves

Mighty good chance the pipe will break off---be prepared to open the wall and upgrade the iron to copper.

There is a dandy 3/4 inch steel or brass compression coupling that allows you to saw off a 1/2" galvanized pipe --add the compression coupling on the cut pipe--then add 3/4 inch copper to the other end of the compression fitting and bush down to 1/2" copper.

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Old 02-18-2011, 08:12 PM   #5
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Replacing shut off valves

use a torch and heat up that valve until its almost glowing. then use 2 pipe wrenches, it'll come out pretty easily
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