What is this and how does it occur?

[Steven Woods]

Is this corosion on the hot and cold water inlets?

[Michael Larson]

Heat traps.

[nbhi]

You have two different types of metal, copper and galvanize. When that happens you get what they call electrolysis's.

[cbrands]

Originally Posted by mlarson

Heat traps.

please explain further...not sure what this means.


I'm with Gary, electrolysis, aka galvanic corrosion.

[Michael Larson]

Originally Posted by cbrands

please explain further...not sure what this means.


I'm with Gary, electrolysis, aka galvanic corrosion.

Looks like I answered before you completed your original post. I have been having computer problems today after a firewall install.

I was refering to the fittings coming out of the water heater.

[Roy D. Cooke, Sr]

Originally Posted by mlarson

Looks like I answered before you completed your original post. I have been having computer problems today after a firewall install.

I was refering to the fittings coming out of the water heater.

very interesting any idea of cost and are they used very often.
Like the idea never noticed one will look close from now on.

I'm with Gary, electrolysis, aka galvanic corrosion.

......... Cookie

[Michael Larson]

Common in my area Roy.
I have used them several times myself. They are also plastic lined to prevent electrolysis.

[Roy D. Cooke, Sr]

Originally Posted by mlarson

Common in my area Roy.
I have used them several times myself. They are also plastic lined to prevent electrolysis.

That being the case there would be no ground carried threw the Copper pipes.
....... Cookie

[Michael Larson]

Originally Posted by rcooke

That being the case there would be no ground carried threw the Copper pipes.
....... Cookie

Not sureI understand Roy. The outer side is galvanized pipe and the copper fitting is in contact with that.

[Roy D. Cooke, Sr]

Originally Posted by mlarson

Not sureI understand Roy. The outer side is galvanized pipe and the copper fitting is in contact with that.

Sorry, Tired did not read the word lined

[Michael Larson]

Originally Posted by rcooke

Sorry

No apology needed. I thought it must have lost something in translation crossing the boarder.

[Bob Elliott]

Needs a die-electric union Steve.They are needed on both pipes as Mike and Cookie alluded to.

[Steven Woods]

Thanks guys I really appreciate the help. Im always continuing to learn on the message boards.

[Brian A. MacNeish]

Originally Posted by mlarson

Heat traps.

Some new electric domestic water heaters come with internal heat traps installed. GE is one brand offered through Home Depot up here.

[Michael Larson]

Originally Posted by Brian A. MacNeish

Some new electric domestic water heaters come with internal heat traps installed. GE is one brand offered through Home Depot up here.

Good info Brian. Thanks. I'll me on the lookout for them. Are they marked as having internal heat traps in some way?