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Topic: Removing the Hot Water Heater Pressure Relief Valve (Read 831 times) previous topic - next topic
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Removing the Hot Water Heater Pressure Relief Valve
I did this years ago. It was easy. Not so now.
There is probably a special wrench designed for the purpose?
If I remove the shroud to the left of the valve I might get a small pipe wrench on it.
Or is there a simple way.
Just want to soak it in vinegar, it's been in there for several years,
Don & Dorothy
Sold our LD in June of 2023

Our boring always non-PC travel blog
Traveling Dorothy
Re: Removing the Hot Water Heater Pressure Relief Valve
Reply #1 –
Don ... mine was a bit tight when I removed it last year.  I just used a bigger wrench and it broke loose.   If it's really stuck, I might consider a shot of penetrating oil.  And I didn't need to remove the shroud.  The PRVs are rather inexpensive so you might consider a new one. 
Re: Removing the Hot Water Heater Pressure Relief Valve
Reply #2 –
Is the valve directly screwed into the hot water tank?
Greg & Victoria
2017 Mid-Bath  “Nocona” towing a manual 2015 Forester
Previously a 1985 TK
SKP #61264
Re: Removing the Hot Water Heater Pressure Relief Valve
Reply #3 –
Don,

I agree with Ed & Margee.  If you're going to the trouble to remove the valve from the water heater, replacing it is a wise decision IMHO.
Bill
2003 -- 23' FL
Re: Removing the Hot Water Heater Pressure Relief Valve
Reply #4 –

Camco sells a tool for removing and replacing the P&T valve:

Camco P&T Valve Removal Tool on Amazon

For a one-time use, it's pricey. Better to borrow one from your friend who has every tool- you have afriend like that, yes?

Mark

As an Amazon Associate Lazy Daze Owners' Group earns from qualifying purchases.
Former owner, 31-foot gas Class A
Former owner, 1997-8 mid-bath
Re: Removing the Hot Water Heater Pressure Relief Valve
Reply #5 –
Mark, that is what my service guy used when he did mine a year ago.  It was crudded up and had a slow leak.  He used a 24" breaker bar with a 2 foot pipe extension to break it free.

Ken F in NM
'08 MB
Re: Removing the Hot Water Heater Pressure Relief Valve
Reply #7 –
Quote from: Kenneth Fears  - 
Mark, that is what my service guy used when he did mine a year ago.  It was crudded up and had a slow leak.  He used a 24" breaker bar with a 2 foot pipe extension to break it free.

Ken F in NM

Ken-

Amazing what a little aluminum/brass interaction can do. I used the tool, but a regular wrench. I suspect it came out easier because the water heater was only a few years old.

I'd offer to give Don the Camco tool I bought (as I shouldn't need it for a while), but it's at home and I'm not.

Mark
Former owner, 31-foot gas Class A
Former owner, 1997-8 mid-bath
Re: Removing the Hot Water Heater Pressure Relief Valve
Reply #8 –
Not having the dedicated tool, I use a 12' crescent wrench opened up and slipped over the end of the relief, so the wrench is sticking outward. A extra long screwdriver is inserted through the hole in the crescent wrench's handle. It's used with a breaker bar to loosen the valve..
Crescent 12 in. Adjustable Wrench-AC212VS - The Home Depot

Larry
Larry
2003 23.5' Front Lounge, since new.  Previously 1983 22' Front Lounge.
Tow vehicles  2020 Jeep Wrangler Rubicon, 2001 Jeep Cherokee
Photo Collection: Lazy Daze
Re: Removing the Hot Water Heater Pressure Relief Valve
Reply #9 –
Quote from: Larry W  - 
Not having the dedicated tool, I use a 12' crescent wrench opened up and slipped over the end of the relief, so the wrench is sticking outward. A extra long screwdriver is inserted through the hole in the crescent wrench's handle. It's used with a breaker bar to loosen the valve..
Crescent 12 in. Adjustable Wrench-AC212VS - The Home Depot

Larry
Having trouble seeing this. Is the wrench handle in line with the valve? 90 degrees to the rig?
Picture?
Merry Christmas
Don & Dorothy
Sold our LD in June of 2023

Our boring always non-PC travel blog
Traveling Dorothy
Re: Removing the Hot Water Heater Pressure Relief Valve
Reply #11 –
does the atwood take the 3/4"(90028) or the 1/2"(91604) valve?
1999 MB
 
Re: Removing the Hot Water Heater Pressure Relief Valve
Reply #13 –
Quote from: Ed & Margee  - 
I'm looking at my receipt and it looks like ours was a 3/4" valve, model number is 10473.

Hope this helps.

yep, that's the camco # for 3/4". thanks

fyi all 3 of these part numbers are 150psi valves.

Atwood also has a 75psi, 3/4" RV that is p/n 92647...
1999 MB