I have to install shut off valves on my hot and cold water supply lines to a bathroom sink in my house. The supply lines are 1/2" inch copper. I have never sweated pipes before and am nervous about cutting into my water lines and putting in the valves. Are there any shut off valves on the market that might tap into the supply lines without any sweating of pipes? Thanks.

 

Yes.
Look for a stop valve with 1/2" to 3/8" compression fittings.
Use a flex tube connector from the valves to the faucet.
Good Luck!
Mike

 

Yes! There are valve in all sizes that you will find in home usage that use compression fittings. You just need to have 2 proper sized wrenches, (12" cresants for your purpose of 3/4" - 1/2") and a cutter of some type to cut the pipe where you want the valves.
You can place these valves only in accessable places, (not inside a wall).
These valves use a ferrule and it presses itself into the pipe as you tighten the fitting. Make sure you use the entire depth of the fitting in setting up the valve. Otherwise, it pretty hard to screw this operation up.

Have fun with your valves and if you run into problems, just ask in this thread and you will receive all the help you need.

 

its worth the 15-20 odd dollars to buy a "close" type circle pipe cutter. If you try and bodge it with a hacksaw ( been there) the ferrule wont slip over ( back to the store for new 3/8 chrome supply lines). Hope this helps--Josh