I am remodeling my kitchen and want to move my kitchen sink left about 3 feet so it is in front of my window. The water lines have already been moved and turn off valves installed. As for the down pipe for the sink....
Do I need to be 100% dead on with my location? I know the water lines do not since they have those flex tubes that go from the valve to the faucet. Was unsure how to run my plumbing if I dont know where exactly the sink will be placed... just a ballpark area.
no, you don't have to be exact. the drain plumbing available is of enough variety so as to make the lines connect easily.Just try to have as little angle bends in the line as possible
I'd replace all the iron pipe I could get to, absolutely. in fact, we did that in Dad's house 25 years ago.
to switch between plumbing types, to avoid electrolytic corrosion, there are two systems.
one is to use solid brass fittings between transitions.
the other is to use what are called transition fittings, with one side metal A, the other side metal B or plastic, and a plastic washer in the middle.
of course, you don't need to do either one. you're coming out with PVC. all you need to do is put a threaded fitting on the plastic in NPT to match the existing ones. in the case of the copper, either solder an NPT fitting on or use a transition fitting. you could use compressive pressure fittings to change the copper to pressure thread, then an adapter from pressure thread to NPT, and then a PVC NPT fitting from there.
but never put a compression fitting inside a wall.
sig: if this is a new economy, how come they still want my old-fashioned money?
Hmmm you have given me a lot to think about. I can actually replace all the piping from the main sewer pipe all the way up. It just looks like they originall ran an ass-backwards run up the side of the wall and in the sink. I could tap an extra fitting on the iron main pipe and run it up to the kitchen completely separate of the original pipe and then gut the old pipe.
for sewer, you can use a stack-cracker or a hand bandsaw to open a section of main drain stack, put in a drain T with those rubber over-pipe splice deals, and drain from there.
if you're more than a couple (3??) feet from the stack, you are supposed to also provide a vent line. one way to do that is another crack in the stack a couple feet up, run line from both those drain Ts in a loop through a drain T where the sink attaches. then the waste and vent both come from the stack.
won't work if you have a window. somebody in another post mentioned there is a drainage vent adapter availiable for these types of applications, you would have to ask a real plumber or an "apron" at the home center.
you can also plumb a new vent stack through the roof for the sink alone.
hopefully one of the tradesmen who visit the site will chime in, like frodo, and tell you exactly how it should be done to meet code.
This message has been edited. Last edited by: swschrad,
sig: if this is a new economy, how come they still want my old-fashioned money?
