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Old 02-17-2018, 10:28 AM   #16
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Re: ? On Demand Electric Hot Water Heater


I wish I knew more about the Pex, that blame thing is leaking again. In the picture the fitting that is connected to the 3/4 pipe is just barely leaking. I have changed out this fitting two times and I have retightened it three times. If I tighten it any more it will bust the fitting. I know I have plenty of the Teflon tape on it, is there another fitting I can use insted of that one? Ace Hardware is really proud of the fitting, with tax it is $7.64 each.

Another problem I have right now, I could not stop the water from contaminating my joint when I sweat it, so I use loaf bread to stop the water like I have in the past, now the blame stuff is clogging the strainers in out faucets. I hope when I change that fitting again I don't have to use loaf bread again.
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Old 02-17-2018, 12:23 PM   #17
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Re: ? On Demand Electric Hot Water Heater


Must have bad machining on pipe threads. You say the tank nipple is new or the copper female adapter ? Both ? much easier t sweat on male adapter on copper along with an isolation valve. If you don't have torch set up to do this a compression adapter can be another option. Hopefully you can locate a fixture that is lower than pipe you are having the water bleed problem. Opening anything on the water system lower than the area you are working on should allow water to drain off there instead. Tools like a "jet sweat" can be great sometimes allowing you to install a(full port) ball valve and isolate off the water bleed off issue. Hope this helps. NOTE: threaded fittings in good condition with Teflon tape and pipe dope should seal without stress. Cranking down on it shouldn't be necessary. Usually makes things worse. (good call)
I will look for what you ended up doing.

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Old 02-17-2018, 12:30 PM   #18
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Re: ? On Demand Electric Hot Water Heater


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Originally Posted by Daron Dyer View Post
Must have bad machining on pipe threads. You say the tank nipple is new or the copper female adapter ? Both ? much easier t sweat on male adapter on copper along with an isolation valve. If you don't have torch set up to do this a compression adapter can be another option. Hopefully you can locate a fixture that is lower than pipe you are having the water bleed problem. Opening anything on the water system lower than the area you are working on should allow water to drain off there instead. Tools like a "jet sweat" can be great sometimes allowing you to install a(full port) ball valve and isolate off the water bleed off issue. Hope this helps. NOTE: threaded fittings in good condition with Teflon tape and pipe dope should seal without stress. Cranking down on it shouldn't be necessary. Usually makes things worse. (good call)
I will look for what you ended up doing.

Daron
Daron, I will let you know what I do to fix this, but right now I got a motor to put in our grandson's car. I appreciate your information.
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Old 02-17-2018, 12:35 PM   #19
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Re: ? On Demand Electric Hot Water Heater


Of course hindsight is perfect, but using static pipe to make that final connection could be your nemesis. Using a corrugated water heater connector and a 3/4" Male adapter back aways would have allowed you to eliminate any small leak and not have to use any thread sealant. Are those dielectric nipples or common galvanized ones?

https://www.homedepot.com/p/BrassCra...-18N/203871937

https://www.homedepot.com/p/Everbilt...5009/205680991
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Old 02-17-2018, 12:36 PM   #20
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Re: ? On Demand Electric Hot Water Heater


Ok, Have a good day Jim. Good Luck !
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Old 02-17-2018, 06:36 PM   #21
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Re: ? On Demand Electric Hot Water Heater


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Originally Posted by chandler48 View Post
Of course hindsight is perfect, but using static pipe to make that final connection could be your nemesis. Using a corrugated water heater connector and a 3/4" Male adapter back aways would have allowed you to eliminate any small leak and not have to use any thread sealant. Are those dielectric nipples or common galvanized ones?

https://www.homedepot.com/p/BrassCra...-18N/203871937

https://www.homedepot.com/p/Everbilt...5009/205680991
It is just galvanized pipe. That is the way to go, when I get back to fixing that leak I will go that route, it looks like the way to do it right. Thanks I do appreciate it.
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