Piping through EPDM liner.


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I'm working on my first water feature. A pondless waterfall. The liner is .45 EPDM Rubber. I am running one and a half inch flexible PVC pipe. I would like to go through the liner a few inches below the water level. What is the preferred method for accomplishing this?
Thanks for your help on the other post in selecting the correct piping.
 
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morewater

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As Meyer stated, a bulkhead fitting is the way to go.

To expand on this, I would strongly advise using a small piece of cement board behind the liner, and then drilling through the cement board with a hole saw, then installing your bulkhead fitting.

In this way, the bulkhead fitting (which I assume will be below ground), will be stabilized in the liner rather than simply "flopping" around.

JMHO, but I'm stickin' to it.
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I would also put some silicone between the liner and the bulkhead. In addition I would fill the pond, let it sit for a day then drain it below where you want to make the hole. This will allow things to settle and there will be less chance of the liner stretching.
 

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