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JasonT3rd · Jan 15, 2007, 09:37 PM

I am looking for a cpvc coupling that does not have a stop. Perhaps my local Lowe's just does not stock it, but it seems like a pretty normal item? They do stock one with a stop, but not without.

Well, I am a pretty novice plumber but have done a few DIY repairs around the house. Perhaps I have the wrong idea on how to fix it but my question is... If you have two solid pipes, meaning they are BOTH fixed and cannot be moved or even flexed at all... then how do you connect them?? I have done this with copper because there is a 4-6" coupling without a stop at my local Lowes and you can cut the pipes that extend towards each other to be pretty close...then slide the coupling down and solder both ends. First, I am assuming that is the proper repair method for copper in that situation??

Second, if I am in the same situation with CPVC, which unfortunately I am, without some crazy "convert to copper and solder your coupling" or something like that... haha... someone please lend some advice!

Also, thanks in advance... I must say I have used this site just to read peoples answers and responses as I've been working on this project and it has been extremely helpful. Some very knowledgeable people here! Thanks again!

Jason

labman · Jan 16, 2007, 04:59 AM

You can buy CPCV compression unions at Lowe's. They are about $2 for a 3/4''. You can slide one all the way on to one pipe, add the second pipe and slide it back over the joint and tighten up the ends. The joint can be undone anytime. I have used them mostly for joining copper and CPVC. They will work on almost any pipe. To be safe, use a mechanical anchor for the pipes. In your application, the pipes may not move as is.

JasonT3rd · Jan 16, 2007, 08:30 AM

labman, thanks so much for the reply! That seems like it will work. I have always been told and read that I should never use compression fittings inside a wall though? These fittings are safe for inside an interior wall that is hidden from access? Thanks again!

Jason

speedball1 · Jan 16, 2007, 04:33 PM

Labman has described a PVC Dresser Coupling. You asked about a CPVC Coupling, (see image). I have misgivings about installing compression fittings inside walls. Regards, Tom

JasonT3rd · Jan 16, 2007, 08:42 PM

Originally Posted by speedball1

Labman has described a PVC Dresser Coupling. You asked about a CPVC Coupling, (see image). I have misgivings about installing compression fittings inside walls. Regards, Tom

Tom, That coupling appears to have a stop... which in turn would not solve the problem, right? I asked a few so called plumbers at Lowe's about a cpvc coupling without a stop and they didn't know and said they had never seen one? Am I confused or are they? Haha. Help me out man... can I order such an animal online? Also, I have found some sights that sell cpvc couplings, however, they do not specify if they have a stop or not... is a "straight coupling" one without a stop or is there another name for it? Thanks again!

Jason

labman · Jan 16, 2007, 09:33 PM

I didn't realize it was going inside a wall. I would study alternatives too.

letmetellu · Jan 16, 2007, 09:58 PM

Originally Posted by JasonT3rd

I am looking for a cpvc coupling that does not have a stop. Perhaps my local lowes just does not stock it, but it seems like a pretty normal item? They do stock one with a stop, but not without.

Well, I am a pretty novice plumber but have done a few DIY repairs around the house. Perhaps I have the wrong idea on how to fix it but my question is... If you have two solid pipes, meaning they are BOTH fixed and cannot be moved or even flexed at all....then how do you connect them??? I have done this with copper because there is a 4-6" coupling without a stop at my local Lowes and you can cut the pipes that extend towards each other to be pretty close...then slide the coupling down and solder both ends. First, I am assuming that is the proper repair method for copper in that situation??

Second, if I am in the same situation with CPVC, which unfortunately I am, without some crazy "convert to copper and solder your coupling" or something like that...haha...someone please lend some advice!?

Also, thanks in advance...I must say I have used this site just to read peoples answers and responses as I've been working on this project and it has been extremely helpful. Some very knowledgeable people here! Thanks again!

Jason

Since you are wanting a coupling without a stop I think it is going to be very hard for you to find one. But you can use a knife and a rasp and remove the stop in a regular coupling. They are not easy to use after you get them to the point that they will slip like you want them to. But it might be worth a chance. Good Luck

speedball1 · Jan 17, 2007, 06:04 AM

Back in the dayze when I was out running copper we had a fitting called a "slip coupling" that had no shoulders,(stops). These couplings were used when two pieces of copper butted together and couldn't be sprung enough to fit a regular coupling on both ends. I have seaqrched the web for a PVC slip coupling and can not find one. Since most female PVC fittings have a little taper to the fitting, (that's why PVC fittings are so difficult to pull apart when you "dry fit" them.) I doubt that there is such a animal as a PVC slip coupling. Regards, Tom