How to cut new thread in PVC elbow, Leak in threaded PVC plug
#1
09-12-17, 08:29 AM
How to cut new thread in PVC elbow, Leak in threaded PVC plug
I have a leak in a threaded PVC plug with a 1/2" thread. The plug is in a 2" diameter 90 degree PVC elbow in a pool skimmer line (See attached pictures).
The existing thread in the elbow has play and the plug can't be tighten.
One way to fix it would be to enlarge the 1/2" threaded hole to 3/4" and use a 3/4" plug. Can anyone tell me how to drill a larger threaded hole? I don't know what tool I would need to do that.
Are there any other ways of fixing this leak?
Thanks
The existing thread in the elbow has play and the plug can't be tighten.
One way to fix it would be to enlarge the 1/2" threaded hole to 3/4" and use a 3/4" plug. Can anyone tell me how to drill a larger threaded hole? I don't know what tool I would need to do that.
Are there any other ways of fixing this leak?
Thanks
#3
09-12-17, 08:40 AM
Thank you for your suggestion. I am not sure it will work with the play it has, but I will try before looking at more complicated options.
#6
09-12-17, 03:11 PM
Drill out the 1/2 inch hole
Hi,
If you want to drill out the existing 1/2 inch hole and increase the size to 3/4 inch, drill the hole out with a 29/32 inch bit, then cut new threads with a 3/4 inch 14 pipe tap. Make sure there is enough PVC in the side of the pipe for the new threads. Use soap water as a lubricant while performing these procedures. To guarantee no leaks when installing new plug, use teflon tape and a good pipe dope. Good luck with your project.
If you want to drill out the existing 1/2 inch hole and increase the size to 3/4 inch, drill the hole out with a 29/32 inch bit, then cut new threads with a 3/4 inch 14 pipe tap. Make sure there is enough PVC in the side of the pipe for the new threads. Use soap water as a lubricant while performing these procedures. To guarantee no leaks when installing new plug, use teflon tape and a good pipe dope. Good luck with your project.
#7
09-12-17, 03:50 PM
Member
Never seen that type of fitting, looks home made.
Just cut it out and put in a new Tee, bush it down to the correct size and do it right.
Just cut it out and put in a new Tee, bush it down to the correct size and do it right.
