prevent bugs from entering pipe opening?

Question

I just had a new water heater installed and they extended the overflow pipe to outside the garage. Since most of the time nothing is coming out of this pipe, bugs may crawl in and clog up the pipe. Is there some sort of cap that I can put on the end of the pipe so that water can still come out but bugs cannot get in?

PipeDown · Accepted Answer

Actually you needn't worry about it. If that valve does vent, high pressure hot water and steam will blast anything a bug can build out of there in a blink of an eye. You should test the pressure relief valve periodically anyway by flushing it with the manual activation lever.

If you must, you don't really want to cap it but sompthing like a cotton ball or some nylon pantyhose rubber banded over the opening would work. Whatever you use, it has to come off very easily (more so than the bugs you are trying to exclude)

Frank Boettcher · Answer

I had trouble with dirt daubers building mud nests in mine.  It wasPVC to the outside.  I turned it down with an elbow and cut a piece offiberglass screen material to cover the opening, drilled out a union alittle to make room for the screen and glued it on.  No more dirtdaubers. I

prevent bugs from entering pipe opening?

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