[DeTomaso] question for the brain trust

[Larry - Ohio Time Corp]

Hi Thomas,

I can test it with water in the shop too. I will look up the Myth Buster
show...

I generally do not drink the hot water. I know hot water can draw the lead
out of the piping system faster then cold water. I do have a lead free PVC
system. I drain and flush the tank regularly. I just do not want to induce a
potently poisonous sealer into my water system.

I do have a TIG welder. I have been using the silver solder to patch it as
it is at a lower temperature then welding. Secondly I have never TIG welded
stainless. The big problem is that the tank is leaking (pin holes)at spots
that it will be hard to weld.

Thanks

Larry - Cleveland

Larry Homolak
Ohio Time Corporation
9401 Olde Eight Rd.
Northfield, Ohio 44067
Phone : 330-467-2430
Fax:      330-467-9560
Larry at ohiotimecorp.com
www.ohiotimecorp.com
-----Original Message-----
From: Thomas Tornblom [mailto:Thomas.Tornblom at hax.se] 
Sent: Monday, April 19, 2010 10:49 AM
To: larry at ohiotimecorp.com
Subject: Re: [DeTomaso] question for the brain trust

Hi Larry!

2010-04-19 16:36, Larry - Ohio Time Corp skrev:
> Gentlemen,
>
>
>
> I have a very expensive natural gas hot water heater (city water) in my
> house. It is also used to heat my house.
>
>
>
> It has a stainless (magnetic 400?) tank. After 20 years it is starting to
> leak around the weld points. I find out that this is common, as the weld
> burns the nickel out of the metal and allows it corrode. I have patched it
> up by brazing / sliver soldering the spots I can reach. It has started to
> leak again.
>
>
>
> I have tried everything I can think of from the outside; JB Weld, POR15,
> epoxy putty, fiber glass etc. The 70 PSI from the inside just lifts it up
> till it leaks again.
>
>
>
> I am stripping the electronics and covers off of it to allow me to
pressure
> test it in the shop with air.

Oh, that sounds dangerous. Pressurized vessels should normally be tested 
with a fluid, at least when doing a pressure test. Have you not checked 
the Myth Busters episode where they blow up a boiler?

>
>
>
> Question:
>
>
>
> I would like to seal the tank from the inside. The sealer needs to be able
> to hold up to the heat of the burner, seal well and NOT be poisonous, as I
> drink this water.

Uh? Do you drink hot water?

I've always heard that you should not drink hot tap water. I don't think 
you will continue to do so after looking inside the boiler :-}

As for fixing the boiler, time to get a TIG?

Cheers,
Thomas