I recently drilled a 1/4 inch hole in the top side only of a 1 inch PVC water supply pipe that is burried in a concrete slab in close quarters. What is the best way to repair it? What are the options? Thank you.

Giddy

iamgrowler

Well, it doesn't sound like you will be able to pull the piping far enough apart to install a coupling, so your next best plan would be to put it back together with four 90's.

Giddy

Can I plug the hole with a self-made pvc plug with pvc cement, resurface over the plug, and place over the area a coupling split lengthwise (flange takenout) and cement it on held by expansion clamps? Giddy

iamgrowler

I sure wouldn't, especially on a pressurized line.

ballengerb1

You may be running 45 psi in that pipe and the patch you describe won't hold forever, if ever. Curious, how did you drill into a pipe that is buried in concrete?

KeepItSimpleStupid

Only idea I have is to tap the hole and use teflon tape and use a Plastic NPT plug such as ones available from here:
Error - BrassCatalog.com

A hole for a 1/8 NPT plug would be 0.332 or a "Q" bit. iCrank NPT Thread Tap Drill Size Chart (Inch)

You'll need a 1/8 NPT tap as well and probably some practice to get the depth right if you've never tapped NPT threads.

labman

As thin as regular PVC pipe is, you wouldn't be able to cut much in the way of threads for a pipe plug.

There are pipe repair sleeves you wrap around the pipe and tighten up. They are sized to standard pipe sizes. I am not sure how they fit on PVC.

speedball1

Several options come to mind. Neptune Inc. makes a pipe repair kit; Neptune Research
or if you have room a dresser coupling,( see image) might do the trick. Good luck, Tom

iamgrowler

You aren't suppose to bury those under concrete, Tom.

speedball1

I know! But on a DIY site we don't always go by code. I offered a option. Regards, Tom