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Old 07-13-2011, 04:36 PM   #1
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copper adapter on frost hydrant


the water comes into my shed via a 3ft frost hydrant whose tap is 3/4" threaded. i want to run copper pipe from there. was wondering if it's bad to put a female 3/4" threaded-solder adapter onto the tap and then solder from there because i am afraid that the torch heat may cook the pipe dope too much (it would certainly melt teflon tape).

i also considered soldering the pipe to the adapter first and then twisting it onto the hydrant but that's not a good option for me because the pipe needs to make some swift turns right after the hydrant (tight space) and i'd prefer soldering it while it's in place.

any thoughts ?

thanks

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Old 07-13-2011, 04:47 PM   #2
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copper adapter on frost hydrant


You are right---you will cook the dope and it will leak,

Best is to solder the fitting to a stub--cool--dope and tape---install---then pack it with wet rags to keep it cool,,and pray.-






This might be a good spot to try one of those new fangled Shark Bite fittings.

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Old 07-13-2011, 05:01 PM   #3
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This might be a good spot to try one of those new fangled Shark Bite fittings.
i loathe the idea of shark bite fittings. but thanks.
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Old 07-13-2011, 05:55 PM   #4
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copper adapter on frost hydrant


i soldered with them connected for 20 years with pipe dope and teflon tape and never had a problem. i only got them as hot as i needed for the solder to flow.
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Old 07-13-2011, 06:59 PM   #5
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copper adapter on frost hydrant


another thought i am entertaining is to use PVC instead of copper. it's a shed and it should suffice. the pipe will be exposed all the way so if it does leak at any point, it should be easy to fix (no drywall to break).
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Old 07-13-2011, 07:29 PM   #6
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copper adapter on frost hydrant


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another thought i am entertaining is to use PVC instead of copper. it's a shed and it should suffice. the pipe will be exposed all the way so if it does leak at any point, it should be easy to fix (no drywall to break).

I'm with you on the Shark Bites----I've bought them to try but never have.


Plastic pipe would be an excellent choice for an out building.
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Old 07-13-2011, 07:37 PM   #7
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copper adapter on frost hydrant


Quote:
Originally Posted by oh'mike View Post
You are right---you will cook the dope and it will leak,

Best is to solder the fitting to a stub--cool--dope and tape---install---then pack it with wet rags to keep it cool,,and pray.-






This might be a good spot to try one of those new fangled Shark Bite fittings.
Sorry, I pushed the "Thanks" button before I saw the Sharkbite part. I used them once, but I'd rather have not.
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Old 07-13-2011, 08:27 PM   #8
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copper adapter on frost hydrant


Are you sure the bib is 3/4"? Could it be 1/2" hose thread? If so, use a FHTxFIP adapter as a union. Attach one side to the pipe of your choosing and the other side to the hose bib.

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