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zoemommy 11-29-2007 06:30 PM

stupid water heater!
can anyone help. my husband and i are trying to replace the prv on our stupid water heater. But we can't get the old one to come off. My 240 pound husband was hanging from the pipe wrench and the thing still won't come unstuck! is there a trick to it?

Marlin 11-29-2007 06:38 PM

What size pipe wrench are you using? How old is the heater? Do you have hard water in your area?

Those valves should pop off with very little effort.

zoemommy 11-29-2007 06:40 PM

it's a 10 grip pipe wrench. the water heater is 15-20 years old.

zoemommy 11-29-2007 06:40 PM

and yes we have hard water!

Marlin 11-29-2007 06:52 PM

A good run for a water heater is ten years so this thing is living on borrowed time. The hard water will also have caused the valve to seize in place. It probably can be moved however a 10in wrench is next to useless for this. I would normally use a 24in, maybe an 18in. If you don't have another wrench I would recommend putting a pipe or something over the handle to get some more leverage but what brand is the wrench? If it isn't Ridgid or Lenox you may end up snapping or bending the wrench possibly injuring yourself in the process. One thing you could try is using the drip leg to get some leverage and move the valve. Don't pull it too hard though as you don't want to bend it.

zoemommy 11-29-2007 07:00 PM

ok we'll try that. would p b blaster help?

Marlin 11-30-2007 05:13 AM

If you have PB blaster give it a try. I don't believe the stuff does what it claims but some swear by it. Let us know if it came off. Or is it new water heater time?

scorrpio 11-30-2007 09:38 AM

Just a note: if the thread has seized real bad, aplication of more leverage might:
a. snap off the threaded portion off the PRV
b. mangle the thread of PRV socket on the heater.

Either way, it'll be new heater time. Which it is already anyway - 15-20years on hard water puts this one on its last legs.

Marlin 11-30-2007 03:04 PM

That's what I got at in the first post. Try and turn the thing, if it breaks off, it was time for a new heater anyway so you aren't any worse off.

Ron The Plumber 11-30-2007 03:15 PM

An 18" pipe wrench and hammer does wonders.

Sammy 11-30-2007 08:03 PM

The question I have is WHY are you replacing the PRV??

If its blowing water, its probably a sign of overheat/failure anyway.... And with the age noted its probably time for a new tank.

zoemommy 12-01-2007 06:19 PM

thank you to every one for the advice!
the p b blaster worked! I was amazed, personally. we're still not getting enough hot water, but at least it's not pouring on the floor now. if we can get 3 more months out of this one it'll have been worth the aggravation! Also, the bigger pipe wrench worked wonders too. my hubby said screw it, this stupid wrench isn't workin! I'm goin to lowe's. 40 minutes later, the prv was replaced and no more leak!

Thanks so much guys.

Marlin 12-01-2007 06:24 PM

You're giving the PB Blaster a lot of credit that the larger pipe wrench deserves.

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