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Old 10-01-2011, 10:12 PM
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mitchgo mitchgo is offline
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poly pipe sizing

I'm going in on monday to our supplier to see if it fits but I'm seeing if anyone may know this.

Would 160psi 3/4 poly fit inside a 1" 200 psi poly line?
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Old 10-02-2011, 07:09 PM
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Quote:
Originally Posted by mitchgo View Post
I'm going in on monday to our supplier to see if it fits but I'm seeing if anyone may know this.

Would 160psi 3/4 poly fit inside a 1" 200 psi poly line?
hunters blue book gives the id/od/wall thickness of poly mitch
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Old 10-02-2011, 07:27 PM
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the question really doesn't have an answer, because the poly pipe dimensions can vary according the resin used
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Old 10-03-2011, 03:02 AM
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mitchgo mitchgo is offline
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Theoretically it will fit. Based on the od of the 3/4 and id on the 1"

It appears pex will work too

I have a service line leak 4' under a driveway- The gas line intersects the water line under the driveway so using a mole is out of the question..

Aside from cutting up the road - I was thinking of using the existing piping as a sleeve and shove a new pipe it
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Old 10-03-2011, 08:47 AM
Mdirrigation Mdirrigation is offline
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there is a tool that the plumbers use to pull a new service line thru an old pipe , generally the old blue polly, you pull a cable thru the pipe and attach a metal device on the end , it slices the old pipe splitting it and pulls in a new pipe as you go .
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Old 10-03-2011, 09:17 AM
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I'm not a poly guy and don't know poly flow rates, so I don't know if this will work for you.

We recently had a similar problem with a broken 1-1/2" PVC main under a driveway. Our fix was to shove a piece of 1" through the existing broken pipe and reconnect it on either side. The reduced flow for the 16'+/- under the driveway didn't affect system operation at all.
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Old 10-03-2011, 12:38 PM
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PEX would work, as would any 3/4-inch CTS tubing, but for SIDR-9 3/4-inch IPS poly to fit inside SIDR-9 1-inch IPS poly, don't count on it happening.
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Old 10-03-2011, 06:20 PM
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Quote:
Originally Posted by Mdirrigation View Post
there is a tool that the plumbers use to pull a new service line thru an old pipe , generally the old blue polly, you pull a cable thru the pipe and attach a metal device on the end , it slices the old pipe splitting it and pulls in a new pipe as you go .
I think you are talking about pipe bursting
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Old 10-03-2011, 06:48 PM
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Same idea ~ anyone making use of the newer PE4710 poly pipe?
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Old 10-03-2011, 09:08 PM
Mdirrigation Mdirrigation is offline
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Quote:
Originally Posted by greenmonster304 View Post
I think you are talking about pipe bursting
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No this isnt bursting , they use a winch or a cable hooked to a truck and pull the new pipe thru the old while splitting the old .
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