PB Yard Service Repair ?

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by theestimator1, Nov 19, 2008.

  1. theestimator1

    theestimator1 New Member

    Joined:
    Nov 19, 2008
    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
     
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Joined:
    Sep 2, 2004
    Occupation:
    Retired Systems engineer for defense industry.
    Location:
    New England
    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.
     
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  4. jimbo

    jimbo Plumber

    Joined:
    Aug 31, 2004
    Location:
    San Diego

    You mean in around 100 years??
     
  5. Redwood

    Redwood Master Plumber

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    Dec 15, 2007
    Occupation:
    Service Plumber
    Location:
    Connecticut
    I question repairing a polybutylene line...
    When they go bad it is generally better to replace them.
     
  6. hj

    hj Moderator & Master Plumber Staff Member

    Joined:
    Aug 31, 2004
    Occupation:
    Plumber
    Location:
    Cave Creek, Arizona
    Pb

    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.
     
  7. Verdeboy

    Verdeboy In the Trades

    Joined:
    Jun 12, 2006
    If it's outside and underground, why not just use PVC pipe and replace the whole length?
     
  8. theestimator1

    theestimator1 New Member

    Joined:
    Nov 19, 2008
    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.
     
  9. Dunbar Plumbing

    Dunbar Plumbing Master Plumber

    Joined:
    Apr 18, 2005
    Occupation:
    Service Plumber, Outdoor Temperature Relief Owner
    Location:
    Northern Kentucky/Greater Cincinnati Area
    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.
     
  10. theestimator1

    theestimator1 New Member

    Joined:
    Nov 19, 2008
    Thanks Rugged,

    Unspliced type K copper does seem like the most durable and reliable material for Yard Service, although I do have one concern, pinholes.

    theestimator1
    Master Electrician
    Maryland
     
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