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-   -   Running Pex under a driveway (http://www.diychatroom.com/f7/running-pex-under-driveway-173314/)

jseymour186 03-01-2013 03:15 PM

Running Pex under a driveway
 
I am planning on replacing the old galvanized water lines in my house with pex. In order to replace the line all way to the meter i will have to cross my driveway (about 20' or so). I was just planning on having to cut my driveway in order to do this until the other day when an old plumber told me that when he had encountered similar situations in the past (using soft copper not pex) they would attach the copper to one end of the old pipe that was to be replaced and attach an excavator (or a come-along if an excavator was unavailable) to the other end of the old pipe and just pull the old pipe out while threading the new line in behind it.

My questions are, has anyone else done or heard of doing this successfully and if they have would it work with pex with the same effectiveness as soft copper?

Thanks,

Hardway 03-01-2013 03:59 PM

I have not pulled plumbing, but I have pulled UF wire this way with and ATV winch! I have watched the gas co pull new plastic line using the old copper and a winch.

md2lgyk 03-01-2013 05:11 PM

Why use pex for that line? The black plastic stuff is much cheaper.

TheEplumber 03-01-2013 05:22 PM

I haven't pulled PEX but have pulled soft copper and poly. If the existing line has any branches it won't work- gotta cut them off first because the branch won't pull. We fish a 1/4" cable down the existing pipe, attach it to the new pipe. a special head is used(we made ours). The cable end of the head rest against the end of the old pipe as you pull while the new pipe is threaded on the other end of the head. As the old pipe comes out the new pipe takes its place. We pulled with our mini excavator. my last pull was 60'. Took more time to set up then pull

jseymour186 03-04-2013 01:40 PM

You wouldn't happen to have any pictures of what that head piece looked like would you?

TheEplumber 03-04-2013 02:04 PM

Quote:

Originally Posted by jseymour186 (Post 1129782)
You wouldn't happen to have any pictures of what that head piece looked like would you?

No I don't sorry. It was basically a thread protector that comes on an end of the steel pipe. We welded a collar on one end that would rest against the end of the existing pipe. we then would thread the new pipe onto the other end of the thread protector- used a copper x male adapter. The cable was also attached to the end with the make shift collar and threaded up the pipe. I'm sure this description doesn't make sense :wink: Google "pulling a water line" You'll see some products available, then get creative. How's the saying go? Necessity is the mother of invention?

Javiles 03-04-2013 04:23 PM

We use our jetter to bore a new hole under the drive way or slab with a sleeve 1 1/2 pvc pipe then feed the copper or whatever... distance to date successfully 30 feet.


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