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Old 08-20-2012, 03:26 PM   #1
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how to stop drops of water at tank top receptacles?


Installed Lowe Whirlpool 40 Gallon Gas water heater.
Having small water drops at both input cold water and output hot water pipe connector joints at the top of water tank. This tank has two holes on top with 3/4" threaded female receptacles for cold water input hot water output.

Tried different stainless steel hoses and plastic breaded hoses, using male+male adapter then female fittings, or just male fitting hose;
also use either and both Teflon tapes and Teflon pipe dope.

But slowly over night small drips of water coming out from the joint at top of tank.

We swap with many different hoses, finally, the least water comes out is the male fitting plastic breaded hose directly screwed into the tank receptacles.

How to stop this drip of water coming from these joints at the top of the tank? Thank you.
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Old 08-20-2012, 03:38 PM   #2
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how to stop drops of water at tank top receptacles?


Looks like you did not use enough Teflon tape. Experts suggest at least 4-1/2 wraparounds.

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Old 08-20-2012, 04:00 PM   #3
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Looks like you did not use enough Teflon tape. Experts suggest at least 4-1/2 wraparounds.
Yes, I use one layer of Taflon tape, from tip all along the threading. I cannot use any thicker than one layer, otherwise it just would not goes in.

I am concern with the soft plastic receptacles on top of the tank from over tightening. Any advice?
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Old 08-20-2012, 10:04 PM   #4
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how to stop drops of water at tank top receptacles?


can I insert the dielectric nipple (3/4" MPT x 3/4") into the top of the inlet and outlet of the tank using some kind of thermo resistant epoxy or glue of permanent potting to the threaded female receptacle?
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Old 08-20-2012, 10:13 PM   #5
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how to stop drops of water at tank top receptacles?


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can I insert the dielectric nipple (3/4" MPT x 3/4") into the top of the inlet and outlet of the tank using some kind of thermo resistant epoxy or glue of permanent potting to the threaded female receptacle?
Not recommended
Use 3/4"x3" long dialectic nipples. then attach your flex lines to that.
Use teflon pipe dope on top of 3-4 wraps of teflon tape. Make sure to apply the tape in the same direction as the threads so it won't unravel while screwing in the nipples.
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Old 08-20-2012, 10:32 PM   #6
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how to stop drops of water at tank top receptacles?


Try this stuff
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Old 08-22-2012, 05:41 PM   #7
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how to stop drops of water at tank top receptacles?


thank you (found at both Home Depot and Lowe's)

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