This is my problem. I have moved into an older home and I am doing some remodeling and when I went to remove the countertop and sink in the bathroom, I found that plastic piping came through the floor and directly to the faucets.

I wish to put a shut off valve on the plastic pipe after shutting off the water so that I can remove the countertop and sink. I am not sure how to proceed in doing this. I understand the concept of the adapters and I want the shut off to connect two pieces of plastic pipe together. I will be using plastic piping to reconnect the sink area.

Thank you,

Pat :-)

Xsassygirl;; there are two types of shutoff's you can get, one is glue on only. The best one to get is the one that takes a screw in cpvc adapter and glues to your incomeing pipe. Then you use a gray or white plastic riser to go on up to the bottom of the faucetand hook on. . #1- trun off water , cut plastic line (USE CPVC PLASTICPIPE) install cutoff then when you are ready ,top is on ,faucet installed, install riserto faucet. Don't use the white pvc pipe for hot water, it does not hold up to hot water.IT is made for cold water only,. ;IF ihave helped rate my answer at the bottom. Have a good day F.B.E.

Hi, is there a special name for this type of adapter, so that I know what to ask for when I go to the plumbing supplier?

FBE left out a step. The first thing is to identify the type of plastic, PVC, CPVC, PEX or cross linked polyethylene, polybutylene, ABS, and who knows what else may have been used at one time. PVC won't take the temperature of hot water, and I am not sure if ABS was ever approved for anything except waste and vent lines.

If it is the white PVC and cream colored CPVC, I see no reason not to buy the solvent weld valves. Whatever you do, buy ball valves. They leak less, shut off tighter, and are easier to work.

The pipe should tell on it what it is. Post back with what you find. Each type of
Plastic pipe has its own methods to work with.

Hi,

Both pipes leading to the hot and cold faucets are cpvc pipes. As I stated, this is an old house and from other things I have noted, the repair work was not done by a professional, otherwise they would have known to use different plastic pipes unless using the cpvc is acceptable.

Pat:-)

CPVC is more expensive than PVC, but works fine on cold water. On a small DIY job, it may not be worth it to use PVC on the cold. It is also easier to adapt from copper to CPVC than PVC. I would go to Lowe's and buy a couple of CPVC solvent weld ball valves, a can of CPVC cement, and a can of primer. Read and follow directions.

If you want to complicate you life with threaded joints, you need CPVC male pipe adapters.

I had to redo the piping under my kitchen sink last year. I used CPVC compression fittings on both sides to go from the old copper to CPVC, then CPVC valves.

Note, if you shut the main water valve off, you must open a hot water line or tap unless you have an expansion tank on the hot water heater. Due to expansion and contraction with temperature changes, water must always be free to flow in and out of it.

Thank you for the information. I spent most of the day trying to find an illustration on the step by step method but to no avail. I will take your advise under consideration.

Thank you.

Pat:-)

LABMAN:, ON the top side of the ball shutoff valve 9SHE is going to have to change, The riser I spoke of is not ridget, its flexable and easy to cut .If she uses the ball valve she can get thec adapter at the same time and risers the other type of shut off I was talking about are metal ,easy to turn on or off 1/2 turn and easy to install. I think the kind you used in your kitchen was what is called ( TRAnssion ) made of brass.I've used a lot of them.. ::: F.B.E.

The body of the valves I used were CPVC just like the pipe.