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Old 08-11-2008, 12:07 AM   #16
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Need advice for gas hot water problem, please!!


Well, Dugly, you did successfully find the problem. Looks like it wasn't the gas valve, but the thermostat.

Now to successfully reassemble that water heater.

(Use teflon tape or pipe dope on the threads of the new gas valve/thermostat.)

Don't run the risk of losing a plastic spoon inside your water heater. Just bend a coat hanger and scratch the bottom of your tank to loosen up any crud that may be stuck to the bottom, and flush it out later with your drain valve.

Now might be a great time to replace the washer on your heater's drain valve, but if push comes to shove, you can always thread a hose cap onto your drain valve to stop it from leaking. If you replace the washer, put in a stainless steel washer screw.

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Old 08-11-2008, 09:19 AM   #17
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Need advice for gas hot water problem, please!!


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Originally Posted by Nestor_Kelebay View Post
Well, Dugly, you did successfully find the problem. Looks like it wasn't the gas valve, but the thermostat.

Now to successfully reassemble that water heater.
Thanks, Nestor! The hardest part of the job, so far, has been finding a friend with pipe wrench large enough to fit the valve--it was on pretty tight, as you can imagine from all those years.

The replacement comes with the thermostat encased in a heavy plastic sleeve. The service rep at the plumbing supply store says to install the valve assembly with the plastic sleeve intact--perhaps that is what caused this to fail, the original did not have any sort of sleeve over the probe. I was quite careful to remove the valve assembly in a manner that would not bump the probe as it came out, so I'm comfortable that it was not knocked off.

I plugged the bung on the water heater last night so I could turn the water to the house on again (very slight leak in the valve on the inlet line--I'll replace that with a ball-valve today, too). Today it gets drained again, then I'll remove the plug, scrape the bottom of the tank as you suggested, replace the washer/screw on the drain faucet as you suggested, and then install the new valve. I won't turn the heat on 'till I've filled it again and flushed the tank again to get rid of whatever might come up when I scrape the bottom.

Gettin' nearer to a hot shower again !

Dugly
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Old 08-11-2008, 06:57 PM   #18
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Need advice for gas hot water problem, please!!


Well, the job is done.

Basically, we went from this:



to this:



One of my supply lines was good, but Murphy's Law dictates that even that one would fail right before my date tonight with a hot blonde. We did it right:



All buttoned up, filled up, and ready to see if it burns:



Here's the new valve, wish me luck (and, yes, there's a new washer in that drain valve--the other one was ready to fail!):



FIRE IN THE HOLE!!!:



All in all, a fairly straightforward R&R, the hardest part was all the running around for the itty-bitty parts (it would have been better if I hadn't kept getting the wrong size, changing my mind, and forgetting parts ).

Before I replaced the gas valve, I scraped the bottom of the tank's inside with a bent-up coat hanger, then flushed it. There was an initial glob of rusty colored water, it ran sort of hazy for 30 seconds, then it ran clear for the next 3 minutes. There was no scale visible on the coat hanger or in the water when flushed. This is a real testament to the water system in this town (Rosenberg, TX)!!

The valve cost less than $80 and with all the brass and copper we're in under $150 .

Cheers to all of us (and I guess I'm included here) who do things for ourselves!!

Dugly

Last edited by YerDugliness; 08-11-2008 at 07:19 PM.
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Old 08-11-2008, 07:26 PM   #19
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Need advice for gas hot water problem, please!!


OK, now, before you forget, do the most important part:

Mix some liquid dishwashing detergent 50/50 with water and paint it onto each of the joints on the gas line going to that water heater that were disturbed or redone. If you see any joint blowing bubbles, that's a gas leak and it needs to be fixed.

You've certainly earned your DIYer armbadge, Dugly.

New let's all keep our fingers crossed and hope Dugly's water heater lasts another 5 or 6 years to pay for his investment in it.
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Old 08-11-2008, 07:46 PM   #20
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Need advice for gas hot water problem, please!!


Quote:
Originally Posted by Nestor_Kelebay View Post
OK, now, before you forget, do the most important part:

Mix some liquid dishwashing detergent 50/50 with water and paint it onto each of the joints on the gas line going to that water heater that were disturbed or redone. If you see any joint blowing bubbles, that's a gas leak and it needs to be fixed.

You've certainly earned your DIYer armbadge, Dugly.

New let's all keep our fingers crossed and hope Dugly's water heater lasts another 5 or 6 years to pay for his investment in it.
Done, Nestor, within 1 minute of the time I read your reply. I used a more dilute mixture in a spray bottle at first (before I posted the final photos), then half & half as you suggested. No bubbles! I even painted back on the flexible gas line a bit just in case all the movement might have cracked it somewhere. No bubbles--thanks so much for that tip on the half & half!

I'll keep my fingers crossed, too--it's a gamble, but even if I have to replace the water heater, 50% of the investment is reusable with the new unit--and you can bet that if that event occurs, I'll even salvage the valve. I checked out new gas hot water heaters in McCoy's, Lowe's, and Home Depot. They all used very similar valves. I guess I'm a yankee at heart, if I think it will come in handy later, I find a place for it.......

My thanks to all who replied for all your help, particulalry to Nestor!!! This was uncharted territory for me, but my confidence level was high when I started and got higher as the project proceeded.

Dugly
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Old 08-11-2008, 11:17 PM   #21
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Need advice for gas hot water problem, please!!


OK, Dugly, well done.

If someone posts a question in here about replacing this kind of gas valve on a water heater, you're our new expert on the subject.

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Last edited by Nestor_Kelebay; 08-11-2008 at 11:22 PM.
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