View Full Version : Using compression fittings vs soldering

11-04-2008, 07:57 AM
I'm replacing cabinets and since the original waterline to the dishwasher was added after the old cabinets were installed, I need to cut it and then reconnect it once the new cabinets are in. I have 9 ft. of 1/2 in. copper tubing (makes a 90 deg. turn behind the cabinets) from the shutoff valve to the dishwasher flex connection. 1 1/2 ft of the tubing is accessable under the sink in the cabinet. I'm going to try to attach a picture to this thread.

If I cut the tubing approx. 6" from the sweated joints of the shutoff valve, will compression fittings on the tubing allow a proper connnection that won't leak?

If that's not a good idea, if I cut the copper pipe just before the reducing connector, would compression fittings for copper pipe-to-copper tubing allow a proper connection? I don't think I have enough copper pipe to do a copper pipe-to-copper pipe connection with compression fittings.


11-04-2008, 09:21 AM
Most plumbers are using compression shutoffs unless you live in an area that doesn't allow that.

I don't even know what State that would be in.
I've never soldered on a chrome stop before.

11-04-2008, 12:02 PM
Here in the northeast sweating on stops is pretty much the norm...
It's either that or, threaded on...

11-05-2008, 04:49 AM
That is usually a feature of a state, or area, with a strong union, because they resist anything that installs easier or faster, or is easier for the homeowner to repair/replace in the future.

Ian Gills
11-05-2008, 01:31 PM
I have said it before and I will say it again. The best piece of advice I ever got from this site was to solder on good quality brass nipples and use thread-on quarter turn angle stops.

That way I never worry about leaks or replacement.

Not that you would worry about leaks or replacement with a properly installed compression angle stop but I am just a worrier like that. Compressions should not be used where there is any chance of movement and I always worry about bumps, particularly in my kitchen/bathroom cabinets. Obsessive and irrrational I know.

Don't mention lawnmowers.