Can you mix black pipe with PVC?

[Jim Clark]

Originally Posted by mrmossyone

What about the size? The black pipe in my camper is a larger diameter than I can get in the PVC at Home Depot. I have a leak under my sink in the P-trap, it's at the first connection. I tried to put some teflon tape around it but it's in a really tight spot and couldn't get it wrapped good. I may see if I can't get it cleaned of old solvent/cement and do it over. It's not a weld but a threaded connection. Any advice? Thanks.

Can, you replace it? Have you replaced the slip joint washer? What do you mean by teflon tape around it? Do you mean around it or on the threads? First connection to the sink or to the waste pipe? What solvent/cement, is it on the connecting pipe making it rough? So many questions we need pictures. BTW you can have a P-Trap slip connection to tight which forces it out of line or round. Have no fear if you don't have it fixed by the Can Opener you will have enough advice and help to really screw it up.

[Phil Gobie]

You can also use "fernco" or nohub couplings where you have space. These will be shock absorbers as well as they are rubber and will dampen vibrations. ABS is not approved for use in some areas (for home use) PVC is available in several makeups here are some. Schedule 40, DWV which the fittings are for drainage and you can use schedule 40 pipe or Foam core pipe. There is also schedule 120 or thin-wall pipe. Schedule 80 heavy wall pipe. And then there is CPVC that is for water distribution and can be used for hot and cold it has water pipe size that corresponds with copper. All of the pipe and ftg.s are marked on the outside.

[overlander63]

For our sink, I used a pvc p trap, and one of the slipover clamp fittings to solve the problem. I have also used a metal p trap, with similar fittings, to go to the black abs, again with no problems. If you don't like the big box stores, Ace Hardware usually carries most all this stuff, they are more helpful than the big box stores, and the few cents more I pay for the "stuff" I need goes into a local merchant's pocket, instead of a conglomerate's bottom line.

[mrmossyone]

Originally Posted by Jim Clark

Can, you replace it? Have you replaced the slip joint washer? What do you mean by teflon tape around it? Do you mean around it or on the threads? First connection to the sink or to the waste pipe? What solvent/cement, is it on the connecting pipe making it rough? So many questions we need pictures. BTW you can have a P-Trap slip connection to tight which forces it out of line or round. Have no fear if you don't have it fixed by the Can Opener you will have enough advice and help to really screw it up.

I put the teflon on the threads, best I could anyway. It's on the first p-trap connection not the connection at the sink. I'll try to take a pic. Man, I have to get off of this puter and get to work. Later.

[solitairenc]

They make just about any type of connector now to put together any two kinds of pipe. It'll take some shopping and don't go to the big box places, they have what they want you to buy and not what you need. The small fexiable connectors are for emergancies and not a permanant fix. The glues are also pipe specific so read the label carefully. The leak around the threads is usually a sign of either overtightened once or not threaded right the first time. It may be simplier to buy another threaded collar than the tape that may leak later. Hope this helps.