Best way to install this expansion tank

[frodo]

Okay, I must have been seeing things.

 

[PlumbGate]

I was responding to PlumbGate's comment above. He was stating that an expansion tank was not required as it wasn't established that there was a PRV. He went so far as to say,"Surprised this wasn't already stated."
Looks like his reference to "PRV" was removed.

Actually no, I was suggesting just don't install it, period. My house has always had a PRV but NEVER had an expansion tank. When I had my hot water tank replaced a couple years ago, the plumber said he "had to" since it was now code. I've had issues with this ever since installation. For one, the don't keep their charge and have to be replenished from time to time. For 2 I have strange pressure noises from fixtures. Code or no-code I would not put this in again I see no use for it. Especially since I would bet if you checked 100 expansion tanks you'll find most of them are low or out of their charge and doing nothing.

 

[Diehard]

Thanks for the clarification.
I guess you don't get enough expansion to reach a critical pressure.
I know many of the PRV's do have a bypass feature that controls thermal expansion pressure, to a point.

 

[Jeff Handy]

Many modern faucet cartridges will also release dangerously high pressure water, or steam, even if turned off.

 

[wood4d]

$25.00 per hour huh???

 

[frodo]

$25.00 per hour huh???

yes

how much are you billed out per hour for ?

plumber $25.00
helper $20.00
outfitted truck $45.00
$90.00 an hour to have a crew at your house. and i'm cheap!!!!!

 

[wood4d]

im in nj. It costs me $45 an hour just to have someone good work for me.

 

[RenewDave]

That’s the way we like to install tanks.vertical, up or down. Never horizontal.

 

[frodo]

View attachment 23675 That’s the way we like to install tanks.vertical, up or down. Never horizontal.

galvanized ??

 

[PlumbGate]

This is how mine was done.

 

[Jeff Handy]

Is that copper direct to the galvanized nipple a good idea?

I usually use a brass transition fitting.

 

[Diehard]

Isn't that a cast brass adapter.
Not that I know if that's any better.

 

[RenewDave]

Yeah, we use gal here. Water is great quality and we don’t have many issues.

 

[voletl]

Is that copper direct to the galvanized nipple a good idea?

I usually use a brass transition fitting.

Water heaters are installed with dielectric nipples there is no need to have any type of dielectric fitting in between the copper and the nipple.

That's the nipples job