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Old 03-15-2011, 10:27 AM   #1
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Dielectric Nipple Replacement Question - Water Heater


Hi folks,

First time poster and have a question regarding the installation of a new dielectric nipple. It seems the nipple currently installed has taken on some corrosion and rather put it off I want to replace it w/ a new one. I have a pretty good idea on how to do it and what tools to use but it is a gas water heater and I'm curious if the gas needs to be shutoff for this kind of repair or is shutting off the water and draining the take sufficient? Thanks in advance!

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Old 03-15-2011, 10:51 AM   #2
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Dielectric Nipple Replacement Question - Water Heater


Yes, turn off the gas if you're draining the tank.

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Old 03-15-2011, 11:00 AM   #3
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Dielectric Nipple Replacement Question - Water Heater


Yea, the more i thought about that the more I realized I don't want a superheated tank w/ nothing in it

Thanks for the quick response
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Old 03-15-2011, 11:02 AM   #4
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Dielectric Nipple Replacement Question - Water Heater


Well since I'm here let me ask this, does replacing the dielectric nipples require the tank to be emptied? Or, is shutting off the water enough? I'd rather not empty the tank if not required.
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Old 03-15-2011, 11:07 AM   #5
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Dielectric Nipple Replacement Question - Water Heater


Hi and welcome sicilian97, to the best DIY'r site on the web,

You actually want to leave water in the tank, to help hold the tank steady while you reaf on the unions (not nipples).

If you are replacing the nipples you are not going to change anything with the corrosion factor.

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Old 03-15-2011, 11:15 AM   #6
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Dielectric Nipple Replacement Question - Water Heater


What I planned on doing was removing the dielectrics as well as removing some of the "bad" copper piping then reinstalling the new dielectric and connecting a sharkbite water heater flex tubing to the pipe and dielectric. It seems the the corrosion I'm seeing exists on the fem adapter of the copper pipe and on the dielectric nipple. Not sure why that would be unless it's just going to happen over time.

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