View Full Version : PB Yard Service Repair ?
11-19-2008, 10:55 AM
I will probably have to replace a leaking section of 3/4” Underground Polybutylene in a 150ft long Yard Service. I was thinking about using 3/4” PEX and Qest compression fittings because it’s easy (I am in the electrical trade, not plumbing). I worry about copper deteriorating underground. Is buried PEX and Qest fittings advisable or should I use something else? Thanks, Marty
11-19-2008, 06:20 PM
There have been some questions about Quest. You'd want to use a larger pipe than that if you used pex since the walls are fairly thick.
11-19-2008, 06:52 PM
I worry about copper deteriorating underground.
You mean in around 100 years??
11-19-2008, 07:34 PM
I question repairing a polybutylene line...
When they go bad it is generally better to replace them.
Qest PB and PEX have the same i.d.'s, but if you join them with a PEX coupling, you have to use a pb crimp ring. But once it cracks there is a good chance it will happen again.
11-19-2008, 09:33 PM
If it's outside and underground, why not just use PVC pipe and replace the whole length?
11-20-2008, 08:46 AM
Redwood made a good point. After a little reading, it sounds like the polybutylene problem will only get worse, and continue forever. Jimbo made a good point. I didn’t realize buried copper would outlast me.
Now I’m thinking, eventually, 1” Type K copper w/ sweat fittings all the way. As a temporary fix, metal insert fittings & crimp rings could connect the old polybutylene to the new copper.
Does this make sense?
What material is used for a new 150ft residential Yard Service?
Your advice is extremely helpful, especially to an electrical person. Thank you to everyone.
11-20-2008, 09:35 AM
No sweat connections underground.
3/4" @ 150' would be plenty
K is the best application, you could get it in one piece, problem solved with the connection underground, with K you can make a flared connection to the meter bracket outlet.
95% of all calls that come through my shop in relation to water service failures,
are plastic piping.
I can't make that up....it's just the statistic. The pipe is constantly expanding/contracting no matter what type it is.
11-21-2008, 08:33 AM
Unspliced type K copper does seem like the most durable and reliable material for Yard Service, although I do have one concern, pinholes.