View Full Version : water pipe repair with sch 40 conduit

10-16-2009, 09:39 AM
I had to do a semi-emergency repair of a broken sch40 pvc water line. The only thing I had available was some of the grey sch 40 electrical conduit; so I used it.

It's about a 6 foot section of 1 1/4"; I assume I now need to get the proper pvc pipe and reinstall it. But would like to know the reason. What exactly is the difference between the two?


10-16-2009, 10:25 AM
It's the same pipe. Just gray instead of white. It should be OK as long as it's SCH 40.


10-20-2009, 06:30 PM
I don't think electrical conduit is rated for potable water.

Doherty Plumbing
10-20-2009, 06:49 PM
Electrical conduit won't have any pressure ratings on it what-so-ever. I would replace it with proper PVC so that you don't have a little emergency in the future.

10-20-2009, 08:12 PM
I asked a manufacturers rep the same question a while ago, his explanation is (paraphrase here). electrical conduit is made to not let water in and plumbing pipe is made to not let water out. It's the coatings on the PVC (outside or inside) that make the difference.

10-21-2009, 06:03 AM
That is like saying you need different doors to keep dogs in and cats out. The "Coating" on the pipe is from the pipe itself during the extrusion process.