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Old 03-03-2019, 03:43 PM   #1
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How to Secure PVC LB to Wall and to Expansion Coupling?


Please take a look at the pictures I've attached.

How do I secure the PVC Expansion Coupling to my LB? The expansion coupling has a male adaptor but the LB doesn't have female threads to accept it.

And how do I secure the LB to my exterior garage wall? I've already drilled the appropriate size hole for the LB to fit through.

Thanks.
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Old 03-03-2019, 04:11 PM   #2
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Place the expansion coupling low on the wall a foot or so above the ground and strap it on the large portion of the expansion coupling. Use a detail adapter to connect the coupling to the lb with pvc conduit. Do not tightly strap the conduit below the expansion coupling.
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Old 03-03-2019, 04:15 PM   #3
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Darn spell check! ......use a female adapter .......
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Old 03-03-2019, 05:01 PM   #4
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Re: How to Secure PVC LB to Wall and to Expansion Coupling?


Quote:
Originally Posted by Wiredindallas View Post
Place the expansion coupling low on the wall a foot or so above the ground and strap it on the large portion of the expansion coupling. Use a detail adapter to connect the coupling to the lb with pvc conduit. Do not tightly strap the conduit below the expansion coupling.
Thank you. I think I did as you instructed with the female adapter. I cemented the female adapter to the LB, then screwed in the expansion coupling male side to the LB.

Still confused on what you mean about "strap the conduit below the expansion coupling."

And how do I secure the LB to the wall? Just use some caulk?
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Old 03-03-2019, 05:26 PM   #5
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Re: How to Secure PVC LB to Wall and to Expansion Coupling?


Strap clamps on the pipe is all that is needed to the hold LB in place. Just don't put the clamp on the movable part of the expansion joint. And you may want a little clear silicone on the top side of the LB entry hole to keep water from wicking in.
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Last edited by Yodaman; 03-03-2019 at 05:28 PM.
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