Cap a line at the valve?

SmellySocks

We need to remove a radiator in our kitchen (doing a kitchen remodel).  We were able to get the radiator off of the valve, but can't seem to remove the valve itself and we are afraid of breaking something.  So, we decided to try capping it at the valve where the radiator would normally connect.  The problem is we can't find a cap that fits.  The closest we got was with a 1 1/2" cap which *almost* fits, but is just a little to small to thread on.



Is there another way can cap it at the valve?  I thought maybe something like the product below, but it says max operating temp is 120F, so I'm afraid it may not work.  Ideas?



<a href="http://www.homedepot.com/h_d1/N-5yc1vZ1xjv/R-100372303/h_d2/ProductDisplay?langId=-1&storeId=10051&catalogId=10053">http://www.homedepot.com/h_d1/N-5yc1vZ1xjv/R-100372303/h_d2/ProductDisplay?langId=-1&storeId=10051&catalogId=10053</a>

Dave in QCA

Apply heat

The part of the valve that connects to the radiator is a union fitting, and threads vary with the manufacturer of the valve.

Remove the valve from the pipe.  Heat the valve up with a propane torch.  Heat it at the base, where it is threaded onto the pipe.  Apply heat for at least 5 minutes.  Then, with an 18 or 24 in pipe wrench on the valve, apply force to remove the valve.  The heat does wonders to loosen the old threads.  It is a good idea to use a second wrench on the pipe, to back it up, so that you are not in danger of breaking a pipe below the floor level.

JStar

...

Are you putting the radiator back in the same location? If so, just close the valve. It should hold. If it doesn't, then you can try getting it off.