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Water pressure in PVW50

I have a 9 year old Rheem PVW50. Last year I replaced the drain valve, T&P valve and the anode rod. The old anode rod was worn out. A couple of months ago I noticed the T&P valve was leaking every once in a while. Then it started every day. I read an article that said if the T&P is leaking to open the cold water faucet, if the T&P stops dripping it is not the water heater. But to check it out get a watts gauge with high pressure marker. So I purchased one and found out the cold water was going up to 110 psi and hot water heater up to 150 psi. Found out I need to replace the Watts Pressure Reducting Valve AU25B. After replacing valve cold side is now 50 to 60 psi. However, the hot water heater registers 50 to 60 and when the water is being heated may go up to 100 psi. No water is leaking out of the T&P valve or anywhere else. Putting my ear to the heater I can hear a little grumbling out of the tank but not overly so. So my question is 2 fold. First, is the water pressure of 50 to 100 in the tank ok? Secondly, when is the best time to replace the tank but still get maximum usage out of the water heater? Thanks for your help.

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Posted on Jan 02, 2017

motor1258
  • 6674 Answers

SOURCE: spent $100 replacing valve on

I'm assuming your talking the pressure relief valve is what's leaking. If plumber says water heater is o.k., then we'll go with that but need to find reason for excess pressure. 2 reasons usually causing that 1) water temperature is getting too hot, or 2) incoming water pressure to tank, is too high.
Have you noticed any difference in those 2 areas such as: water flow at all taps seems to be stronger, even cold taps? Have you payed close attention to hot water temperature, does it seem hotter than usual? If it does, or did seem hotter, have you tried adjusting thermostat on tank down a few degrees to see if that stops the tripping of the pressure relief valve?

Posted on Feb 21, 2011

mc1bean
  • 3053 Answers

SOURCE: I replaced a 15 year old Rheem 40 gallon electric

These are interior metals, similar like rock used in a sauna, to help keep water hot longer. Here is somethings to check out.

Hello, dave

I was trying to help you out here. Maybe this will help some? I was going backto some customers that asked questions in the recent past and even fartherback. It appeared that no one answeredsome of them, So, I thought I would take some of my personal time to see if Ican help. Even though this Informational site may not have your exact model orbrand, this site will help you a lot. Here is a site link about everything you want to know about hot waterheaters and possibly yours, from
repair to trouble shooting it. http://home.howstuffworks.com/water-heater.htm

Please if this helped you at all, if you can find the time and in your heart torate my help and some kind words written would be appreciated for my free help, I would appreciate it.

Here is also my direct link to my own pages of other areas of my expertise forother problems you might have in Automotive, Appliance, and Electronics. DropIn anytime for my help.

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Posted on Oct 29, 2011

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1 Answer

I am looking for a magnesium anode for a Rheem natural gaz water heater PV75


There are two types magnesium anode.
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2) Combo-anode that connects to Hot water nipple, and comes in solid or combo.

Contact guys at following link to purchase anodes
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Rheem 'preferred parts'
http://waterheatertimer.org/pdf/2011_Rheem-anode-rods.pdf
Purpose of resistorized anode is supposedly so magnesium performs as well as aluminum.
Rheem however had 'resistorized elements' years ago, and that turned out to be promotional gimmick so people would buy rheem-brand products.

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How to how to install the anode rod - for extended warranty - in a new Rheem waterheater?


You are installing a combo anode rod that replaces hot water outlet nipple. This means you will have 2 anode rods, which doubles the anode capacity of tank, which can cause extended life of water heater, assuming that both anodes are inspected each 2-5 years.

Sounds like a heat trap insert is in the way.
Look at parts sheet that comes with product manual.
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I want you to contact the Tank forum since they are anode experts:
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My understanding is that Rheem water heaters are made so only Rheem brand anodes fit their tanks. While other companies use generic anodes that are sold at any plumbing supply, and also sold at Tank website.

You can configure pipes to make heat traps that save save $2-4 per year on gas water heater operation.
http://waterheatertimer.org/images/Heat-trap-install-900.jpg
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GE is made by Rheem, but the market is always changing. Rheem-based serial number shows tank was made in 1990.
Tank will last as long as anode rod(s) protects steel tank from rusting.
If your tank has two anode rods, then tanks lasts longer.
That's how companies determine if water heater is '6-year' or '12-year.'
I don't have manual for your product to say if you have 12 year tank. Side of tank might have information blurb besides mandatory label that shows serial number.
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If the water heater is making gurgling rumbling and/or crackling sounds then tank has sediment build-up.
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http://waterheatertimer.org/Replace-anode-rod.html
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http://www.thisoldhouse.com/toh/video/0,,20047047,00.html

To find anode rod, see if manual shows image.
Some rods are hidden under metal cover of tank.
Some have circular plug located on top of tank.
Some heaters have 2 anode rods > this would be on 12-15-lifetime warranty tanks
Some anode rods are connected to hot or cold water nipples.

Post question on professional plumbing forum with brand and model number:
Look at label on side of tank for valuable information needed to post question.
http://www.thetankatwaterheaterrescue.com/forums/forum3/

Add a comment for more free assistance.
Also take advantage of fixya phone service.
For a price, fixya expert speaks to you via phone while you solve the problem.

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