Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Plumbing

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 12-23-2013, 07:27 PM   #1
Newbie
 
Join Date: Dec 2013
Location: Brunswick, Ohio
Posts: 3
Rewards Points: 0
Share |
Default

Dielectric unions leaking on water heater


For the past several days my 4-5 year old water heater has been leaking somewhat from the top of the dielectric unions. It is a A.O. Smith Power Shot so it is a very expensive job to replace. I installed it myself-apprenticed to a plumber during college. They seem a bit corroded but nothing I can't wipe away. Thoughts?


Last edited by Wadman2; 12-23-2013 at 08:15 PM.
Wadman2 is offline   Reply With Quote
Old 12-23-2013, 07:38 PM   #2
DIY staff
 
Join Date: Sep 2009
Location: Kane county,Illinois
Posts: 21,633
Rewards Points: 22
Default

Dielectric unions leaking on water heater


Have you tried tightening them? The gaskets(washers) might be shot,but can be replaced easily with a few turns of a wrench---

__________________
New members: Adding your location to your profile helps in many ways.--M--
oh'mike is offline   Reply With Quote
The Following User Says Thank You to oh'mike For This Useful Post:
Wadman2 (12-23-2013)
Old 12-23-2013, 07:44 PM   #3
Newbie
 
Join Date: Dec 2013
Location: Brunswick, Ohio
Posts: 3
Rewards Points: 0
Default

Dielectric unions leaking on water heater


Builder never installed shutoffs so I was waiting till tomorrow when I can shut household water off. I'll install shutoffs too. I didn't know I could replace those seals.
Is the Dielectric union a right hand thread? I bought them from DIY so I'll stop there and ask for replacement seals before I try to disconnect them. Do they usually disconnect without major problems?

Last edited by Wadman2; 12-23-2013 at 07:50 PM.
Wadman2 is offline   Reply With Quote
Old 12-23-2013, 08:17 PM   #4
Newbie
 
Join Date: Dec 2013
Location: Brunswick, Ohio
Posts: 3
Rewards Points: 0
Default

Dielectric unions leaking on water heater


Thanks. I just went and tightened them. One went 3/4 of a turn. It must have loosened up! The other seemed tight. I think it's good. Thanks!
Wadman2 is offline   Reply With Quote
Old 12-23-2013, 08:47 PM   #5
DIY staff
 
Join Date: Sep 2009
Location: Kane county,Illinois
Posts: 21,633
Rewards Points: 22
Default

Dielectric unions leaking on water heater


I like happy endings!!! You are welcome---
__________________
New members: Adding your location to your profile helps in many ways.--M--
oh'mike is offline   Reply With Quote
Old 12-23-2013, 09:43 PM   #6
Lord of Slums
 
Join Date: Feb 2013
Location: Detroit Mi
Posts: 737
Rewards Points: 0
Default

Dielectric unions leaking on water heater


Shut off only on cold side......
mj12 is offline   Reply With Quote
Old 12-24-2013, 02:32 AM   #7
Member
 
Join Date: Nov 2011
Location: Hartfield VA
Posts: 26,357
Rewards Points: 34
Default

Dielectric unions leaking on water heater


And install a ball valve not a gate valve!
__________________
When posting in forums, letting us know your location will help others give better feedback/advice/solutions to your questions
joecaption is offline   Reply With Quote
The Following User Says Thank You to joecaption For This Useful Post:
gregzoll (04-04-2014)
Old 04-04-2014, 02:19 PM   #8
Newbie
 
Join Date: Apr 2014
Location: Highland Park, IL
Posts: 5
Rewards Points: 0
Default

Dielectric unions leaking on water heater


Quote:
Originally Posted by mj12 View Post
Shut off only on cold side......
Can you explain why only on cold side??

We're getting ready to replace one of our 2 50-gallon tanks ourselves and trying to learn all that's involved. One of the tanks started leaking last week so we drained it, and installed a shutoff ball valve on the hot side to isolate it and just be able to use the working one. It seems from reading here that this is not to code?
Alex+Kay is offline   Reply With Quote
Old 04-04-2014, 04:27 PM   #9
DIY staff
 
Join Date: Sep 2009
Location: Kane county,Illinois
Posts: 21,633
Rewards Points: 22
Default

Dielectric unions leaking on water heater


You only want a shut off on the inlet side---that way you can shut off the water if the unit needs servicing----

Two shuts is a hazard---and an unneeded expense---

One thing to look out for when installing a tank----be sure that the cold water line is going into the cold inlet----this may sound like a stupid thing to say---but the last guy might have screwed up---so check an make sure that what you think is the cold ,really is the cold-----

I just replaced an old heater---I warned the new home owner that the heater was very old---sure enough---I get a call two days after she moved in---Mike the water goes cool before I finish my shower----

Bad dip tube I figured---wrong---the tank was piped wrong---back in 1990--
__________________
New members: Adding your location to your profile helps in many ways.--M--
oh'mike is offline   Reply With Quote
The Following 2 Users Say Thank You to oh'mike For This Useful Post:
gregzoll (04-04-2014), jmon (04-04-2014)
Old 04-04-2014, 06:39 PM   #10
Member
 
Join Date: Nov 2011
Location: Hartfield VA
Posts: 26,357
Rewards Points: 34
Default

Dielectric unions leaking on water heater


Funny story about a water heater.
The customer is a high school principle so you would think he had a clue.
He buys a 100 + year old farm house and wants me to come look at a bunch of jobs needing to be done.
I show up and there's a huge water heater sitting in a corner right in the kitchen with no walls around it.
Old steel water lines completely exposed running across the ceiling.
His question is "his insurance company wants to know if the water heater is more then 20 years old".
This thing was 6' tall and at least 5' wide. It had mercury switches for the thermostat.
It took 5 people, 2, hand carts and we had to cut out the doorway to get it out of the house.
__________________
When posting in forums, letting us know your location will help others give better feedback/advice/solutions to your questions
joecaption is offline   Reply With Quote
The Following 5 Users Say Thank You to joecaption For This Useful Post:
gregzoll (04-04-2014), jmon (04-04-2014), oh'mike (04-06-2014), SHR Plumber (04-04-2014), TheEplumber (04-04-2014)
Old 04-04-2014, 06:52 PM   #11
Newbie
 
Join Date: Apr 2014
Location: Highland Park, IL
Posts: 5
Rewards Points: 0
Default

Dielectric unions leaking on water heater


Thanks for the reply, but another question...

Quote:
Originally Posted by oh'mike View Post
You only want a shut off on the inlet side---that way you can shut off the water if the unit needs servicing----

Two shuts is a hazard---and an unneeded expense---
The 2 tanks are in parallel - what is to stop the hot water from the good tank backing up into the empty tank, unless there is a valve there?
Quote:
Originally Posted by oh'mike View Post
...
Bad dip tube I figured---wrong---the tank was piped wrong---back in 1990--
When our house was built eight years ago, the plumber connected one of the outside faucets to the hot instead of the cold water....
Alex+Kay is offline   Reply With Quote
The Following User Says Thank You to Alex+Kay For This Useful Post:
oh'mike (04-05-2014)
Old 04-04-2014, 09:14 PM   #12
Retired from the grind
 
gregzoll's Avatar
 
Join Date: Dec 2006
Location: Midwest - Central Illinois
Posts: 14,154
Rewards Points: 62
Default

Dielectric unions leaking on water heater


Quote:
Originally Posted by joecaption View Post
Funny story about a water heater.
The customer is a high school principle so you would think he had a clue.
He buys a 100 + year old farm house and wants me to come look at a bunch of jobs needing to be done.
I show up and there's a huge water heater sitting in a corner right in the kitchen with no walls around it.
Old steel water lines completely exposed running across the ceiling.
His question is "his insurance company wants to know if the water heater is more then 20 years old".
This thing was 6' tall and at least 5' wide. It had mercury switches for the thermostat.
It took 5 people, 2, hand carts and we had to cut out the doorway to get it out of the house.
Sounds like the Water Heater from the old Disney Movie "Snowball Express".
__________________
Ren: Now listen, Cadet. I've got a job for you. See this button? Ren: Don't touch it! It's the History Eraser button, you fool! Stimpy: So what'll happen? Ren: That's just it. We don't know. Maybe something bad, maybe something good. I guess we'll never know, 'cause you're going to guard it. You won't touch it, will you?
gregzoll is offline   Reply With Quote
Old 04-04-2014, 09:27 PM   #13
Member
 
Join Date: Jul 2011
Location: Houston Texas
Posts: 1,078
Rewards Points: 0
Default

Dielectric unions leaking on water heater


I replaced 2 50's recently, buy quality unions, the first 4 I bought were cheap ones and they leaked. Replaced with more expensive brand names and no issues.
__________________
digitalplumber is just a name for use here, I am not a plumber!
digitalplumber is offline   Reply With Quote
Old 04-04-2014, 09:29 PM   #14
Lord of Slums
 
Join Date: Feb 2013
Location: Detroit Mi
Posts: 737
Rewards Points: 0
Default

Dielectric unions leaking on water heater


The reason the code exists is you would not want someone turning both shut off valves closed. That would basically give you a pressure cooker. In theory you would have the temp pressure valve to blow. If that valve were to fall, you could have big trouble.

mj12 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Chasing Ghosts - Phantom Water Leak FrozenMeatballs Plumbing 3 02-17-2013 11:24 AM
Water Heater Constantly Failing/Replaced DroidGuard12 HVAC 6 04-11-2012 03:41 PM
Dielectric Unions vs. Brass vs. None on Water Heater Perry401 Plumbing 2 05-07-2011 11:28 PM
Solar hot water indatom123 Green Home Improvement 0 12-19-2010 12:01 AM
A blocked water line causing water to loose heat? Snav Plumbing 6 05-07-2010 02:18 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.