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John28 06-12-2013 11:30 AM

Gas Hot Water Tank Replacement
 
I'm looking to replace my hot water tank, never did one, but looking for some advice.

What route should I go for a new Cold water shutoff? The one is in bad shape which I'll cut out. My thinking was the Sharkbite ball valve with braided flex line right to the cold supply of the tank. Do you trust these Sharbites, or should I use a ball valve with female ends, to thread sweated lines in?

Just looking at future change outs where both supplies with the Sharbites flex lines would thread to the tank. And my gas supply has a flex line, which all also replace. How much easier with 3 flex connections for future change outs could it get, or don't go this route?

I also have to check on an expansion tank, never had one, and i don't believe there is any type of pressure regulator on the water coming in. If this is the case, do I really need an expansion tank, as no other homes in this area have them? Thanks

John28 06-12-2013 12:16 PM

These are the Sharkbites I was referring to
http://www.youtube.com/watch?v=BRyQeo2tkQ4

ddawg16 06-12-2013 12:29 PM

Instead of a sharkbite....I would sweat a 3/4" male threaded coupling...then you can screw on a 3/4" ball valve. After that you can use flex.

This is how mine looks.

http://i43.photobucket.com/albums/e3...psf2e15557.jpg

TarheelTerp 06-12-2013 12:56 PM

Quote:

Originally Posted by John28 (Post 1199920)
My thinking was the Sharkbite...

despite the enthusiasm so many have for these...
I continue to assert they are a repair item for use by maintenance hacks and when you don't have time to plan or get the correct materials.

If you don't know how to sweat copper... learn.
Allow for the time but this is a perfect opportunity
Quote:

do I really need an expansion tank...
1) Call your county 2) look for a pressure reducer valve

plumber12 06-12-2013 09:45 PM

thanks for nice scan short picture ddawg16 also give some advice,me also clear about this matter

wkearney99 06-13-2013 10:22 AM

[QUOTE=TarheelTerp;1199955]If you don't know how to sweat copper... learn.
Allow for the time but this is a perfect opportunity/QUOTE]
Seriously. If the typical half-assed contractor can do it, so can anyone else.

The real key is make sure the pipe is dry before trying to heat it up for the solder. If there's any water still in the line then it'll never heat up evenly enough to get the solder going properly.

But it really is a pretty easy thing to do.

John28 06-13-2013 10:37 AM

I know how to sweat lines, just didn't want to hard line it right to the supplies, for easier future change outs. If tanks were as the same quality of older ones I'd have no problem hard lining it. But everything I read 5-10 years on tanks now? Believe it or not this tank is 28 years old and still works, but starting to gargle, as I didn't keep up with flushing the last several years, and the shutoff is in bad shape. So if I'm going to be replacing it more often, I want a easier quicker setup to deal with.

Decided to sweat male adapters as suggested with a ball valve, then flex line from there, I'm thinking Stainless Steel Rino Flex? Thanks

ddawg16 06-13-2013 10:40 AM

I wouldn't use SS.....it is more prone to cracking than copper. It can handle higher temps and pressure...but your copper will get no where near it's limit.

John28 06-13-2013 10:47 AM

Quote:

Originally Posted by ddawg16 (Post 1200458)
I wouldn't use SS.....it is more prone to cracking than copper. It can handle higher temps and pressure...but your copper will get no where near it's limit.


Not that familiar with either, just did a lot of reading where most prefer the Stainlesss over Copper for this application? Thanks, I'll look into it more, before deciding? I'm in no real hurry, as it still works, but is definitely going to need changed.

Is there a particular Brand Copper Flex you prefer?

ddawg16 06-13-2013 10:56 AM

I may have to re-think my opinion on SS flex....at least in this application. I just did some searching and there seem to be a lot of good things said about it.

We use SS flex lines here...but in a much higher performance application...and the failures are always the same...cracking in the crease....

John28 06-13-2013 11:24 AM

Like I said, just what I been reading, but I have no expierence with either.

With SS, it is more expensive, and different qualities, as I read stay away from the cheaper.

Here's a link, that compares theirs to copper in the description, and has a lifetime warranty, but not sure if that would cover cracking?
http://www.hotwaterheaterdirect.com/...connectors.asp

They also say reusable and rebendable? Don't think I'd reuse them though, once bent to shape, and have been used for awhile?

wkearney99 06-13-2013 12:16 PM

There's also the dissimilar metals issue. Don't know if/how that would apply here, but I've suffered more than one failure of a fitting when someone in the past used the wrong materials when mating up to copper.

John28 06-13-2013 12:19 PM

Quote:

Originally Posted by wkearney99 (Post 1200499)
There's also the dissimilar metals issue. Don't know if/how that would apply here, but I've suffered more than one failure of a fitting when someone in the past used the wrong materials when mating up to copper.


No galvanic effect stainless steel

Ghostmaker 06-13-2013 05:31 PM

New hot water tanks come equipped with Dialectic nipples. Thats the stainless steel nipple with plastic liner out of your hot and cold inlet.

John28 06-14-2013 12:06 PM

1 Attachment(s)
Does anyone know what this T-fitting on the Hot line coming from the tank would have been for, or it's purpose? It has a threaded plug and is corroded some, which i was going to eliminate.

You can also see the Cold water shut off in the back, which I'll replace with a ball valve, as it's in bad shape too, Thanks

And no, I did not wrap that foam foil tape on the lines, it's always been there.


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