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Unsticking Two Electrical Conduits?

Discussion in 'Electronic Repair' started by W. Watson, Feb 20, 2007.

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  1. W. Watson

    W. Watson Guest

    Is there some way to to separate two PVC condcuits that are glued together?
    One is stuck vertically into the ground, and the coupler is about 8" above
    ground. Heating didn't quite work. The upper conduit is about 3" long. The
    diameters of the conduits are 1.5".

    Wayne T. Watson (Watson Adventures, Prop., Nevada City, CA)
    (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time)
    Obz Site: 39° 15' 7" N, 121° 2' 32" W, 2700 feet

    "It is important to realize that in physics today,
    we have no knowledge of what energy is ... It is
    an abstract thing ..." -- Richard Feynman
     
  2. DaveM

    DaveM Guest



    Yes, Watson, there *IS* a way to separate those conduits. Run, don't walk, to
    your nearest hardware store and buy the cheapest hacksaw they haven and return
    forthwith to the conduit location. Proceed to saw the conduit through with the
    hacksaw, being *VERY* careful not to disturb the contents of the conduit,
    particularly if they are energized.
    Seriously... PVC conduit is glued with a solvent glue, which means that the
    original two pieces of conduit are now effectively and hopelessly welded
    together. The usual means of separating the conduit is by sawing it apart.
    If you want to mate them back together after you've worked your magic on the
    contents, just make sure that you get a coupler of the same size and material
    while you're at the hardware store. And a length of conduit to reconnect the
    ends. And a small can of PVC cement. Solvent cleaner is highly recommended,
    but not absolutely necessary if the conduit surfaces are clean.

    Cheers!!!
    --
    Dave M
    MasonDG44 at comcast dot net (Just substitute the appropriate characters in the
    address)

    Some days you're the dog, some days the hydrant.
     
  3. PeterD

    PeterD Guest

    If they are glued together, then (unless it was done poorly) it is
    pernament!
     
  4. James Sweet

    James Sweet Guest


    Not really, that glue welds the plastic. You have to cut it off to
    separate it.
     
  5. W. Watson

    W. Watson Guest

    Fortunately, my local h/w store had a conduit magic wand that would do the
    trick. However, they were out of stock. Apparently, some guy who was buying
    something called the London Bridge had bought them.

    With a little more thinking and strategizing, I found a place to cut that
    got me around the problem. However, while I was struggling with a way to
    separate them, I did make progress with heat and peeling one pipe away from
    the other. Just too awkward to continue.

    However, I ran into the opposite problem last night. Putting two 45 degree
    bends for 1.5" conduit together. Sanding didn't help. A visit to the h/w
    didn't help either. I had a limited choice, since I had cut one of the
    bends. Soap? I'm going to cross my fingers and hope the glue will act as a
    lubricant. If not, I'm out $12 and some more time.

    Wayne T. Watson (Watson Adventures, Prop., Nevada City, CA)
    (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time)
    Obz Site: 39° 15' 7" N, 121° 2' 32" W, 2700 feet

    "It is important to realize that in physics today,
    we have no knowledge of what energy is ... It is
    an abstract thing ..." -- Richard Feynman
     
  6. You need to use a few inches of conduit to connect them. Be aware that there
    is a code limit on the total 'degrees of bending' in a given run - you may
    need an elbow with a screw cover. You also may find it an SOB to pull
    through too many bends.


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  7. Jerry Peters

    Jerry Peters Guest

    Not a lubricant, the glue softens the surface of the conduit and
    coupling. The fit is deliberately made tight because of this effect.

    Jerry
     
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