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Re: Water heater relief valve/overflow
[Re: hallb]
#4104662
03/21/24 03:01 PM
03/21/24 03:01 PM
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Joined: Nov 2013
Posts: 10,348 coffee county
goodman_hunter
Booner
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Booner
Joined: Nov 2013
Posts: 10,348
coffee county
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may have drained down and when filling the air and steam was released through PLV. I wouldnt turn on breaker till i could hit PLV and water came out. Might not help your problem but might prevent elements burning out due to low water level.
For without victory, there is no survival
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Re: Water heater relief valve/overflow
[Re: hallb]
#4104672
03/21/24 03:26 PM
03/21/24 03:26 PM
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Joined: Jan 2014
Posts: 10,416 Scottsboro, Al
jbatey1
Lucky Bastage
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Lucky Bastage
Joined: Jan 2014
Posts: 10,416
Scottsboro, Al
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Couple of things.
Valve going bad, Thermostats sticking…. Or in my case… I’m dealing with this now. The city replaced my water meter and installed a backflow preventer. Now the thermal expansion from the water heater randomly causes it to pop off
The fool tells me his reasons; the wise man persuades me with my own.
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Re: Water heater relief valve/overflow
[Re: hallb]
#4104678
03/21/24 03:35 PM
03/21/24 03:35 PM
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Joined: Jan 2005
Posts: 14,285 Hoover
Fattyfireplug
Booner
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Booner
Joined: Jan 2005
Posts: 14,285
Hoover
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Water hammer from turning the water on too fast most likely. Should do it a little at a time over a few minutes. They normally don't release unless the water temperature is in excess of 210 degrees or 180 psi. It varies a little bit.
Character is not developed in moments of temptation and trial. That is when it is intended to be used.
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Re: Water heater relief valve/overflow
[Re: Tigger85]
#4104846
03/21/24 09:19 PM
03/21/24 09:19 PM
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Joined: Oct 2015
Posts: 6,463 Pelham Al
Tigger85
12 point
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12 point
Joined: Oct 2015
Posts: 6,463
Pelham Al
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Need a new pressure regulator Duh
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Re: Water heater relief valve/overflow
[Re: hallb]
#4104929
03/22/24 06:55 AM
03/22/24 06:55 AM
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Joined: Jan 2014
Posts: 10,416 Scottsboro, Al
jbatey1
Lucky Bastage
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Lucky Bastage
Joined: Jan 2014
Posts: 10,416
Scottsboro, Al
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If you don’t have an expansion tank above the water heater, has the city recently replaced your water and installed a backlflow preventer at the time?
If so, the thermal expansion is causing the water to pop out of the pt valve at times. Only fix is the add an expansion tank or remove the backflow preventer.. there again, if you have one.
Edit to add : I had no clue that I’ve already commented on this thread. Disregard my post if it doesn’t apply. It’s been a long week 😁
Last edited by jbatey1; 03/22/24 06:57 AM.
The fool tells me his reasons; the wise man persuades me with my own.
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Re: Water heater relief valve/overflow
[Re: Tigger85]
#4104996
03/22/24 08:41 AM
03/22/24 08:41 AM
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Joined: Sep 2013
Posts: 2,337 Birmingham, Al
johnmcgowan
8 point
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8 point
Joined: Sep 2013
Posts: 2,337
Birmingham, Al
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Need a new pressure regulator ^^^^ Certainly something to look at. I had to replace mine several years ago due to it going bad and had 150 lbs of water pressure throughout the house. All the toilets were hissing due to the high pressure and hot water was dripping out of the water heater pop off relief valve and all over the garage floor. High pressure is not good on all the seals either. Good luck and hope you find the issue.
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Re: Water heater relief valve/overflow
[Re: hallb]
#4105016
03/22/24 09:02 AM
03/22/24 09:02 AM
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Joined: Jan 2017
Posts: 3,553 Lower Alabama
Andalusia
10 point
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10 point
Joined: Jan 2017
Posts: 3,553
Lower Alabama
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Your plumber can connect a pressure gauge to your water spigot and check the pressure in your system easily. Probably don't have a backflow preventer except on your sprinkler system. If you only have a 10ft run to drain your overflow outside I would go ahead and install yourself. Should be a quick fix. You can cut off the breaker and H2O and wait awhile then cut the water back on and check your valve. If no leaks then cut the breaker on and watch again. Maybe this will help narrow it down.
"If you are the smartest person in the room, you're in the wrong room"
"How you do Anything, is how you do Everything"
"It is the mark of an educated mind to be able to entertain a thought without accepting it"
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Re: Water heater relief valve/overflow
[Re: Andalusia]
#4105046
03/22/24 09:48 AM
03/22/24 09:48 AM
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Joined: Jan 2014
Posts: 10,416 Scottsboro, Al
jbatey1
Lucky Bastage
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Lucky Bastage
Joined: Jan 2014
Posts: 10,416
Scottsboro, Al
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Your plumber can connect a pressure gauge to your water spigot and check the pressure in your system easily. Probably don't have a backflow preventer except on your sprinkler system. If you only have a 10ft run to drain your overflow outside I would go ahead and install yourself. Should be a quick fix. You can cut off the breaker and H2O and wait awhile then cut the water back on and check your valve. If no leaks then cut the breaker on and watch again. Maybe this will help narrow it down. Our city is going around and installing backflow preventers in between the home and the main meter, without ever giving anyone knowledge of doing so.. at least in my neighborhood they did.
The fool tells me his reasons; the wise man persuades me with my own.
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Re: Water heater relief valve/overflow
[Re: hallb]
#4105072
03/22/24 10:39 AM
03/22/24 10:39 AM
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Joined: Sep 2009
Posts: 2,775 Florida
jacannon
10 point
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10 point
Joined: Sep 2009
Posts: 2,775
Florida
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Water cooled off and created a vacumn that sucked the valve open and it didn't close until it got pressure.
Grandma said...Always keep a gun close at hand, you just never know when you might run across some varmint that needs killing...
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Re: Water heater relief valve/overflow
[Re: hallb]
#4105076
03/22/24 10:42 AM
03/22/24 10:42 AM
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Joined: Jan 2005
Posts: 14,285 Hoover
Fattyfireplug
Booner
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Booner
Joined: Jan 2005
Posts: 14,285
Hoover
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You can buy a gauge and check it yourself. Get a gauge and attach it to a regulated hose bibb. Usually, but not always, the back of the home is regulated. Unregulated pressure can be high (greater than 80psi). Regulated pressure should be somewhere between 40-80. That's normal operating pressure. The gauge I use has a black and red needle. Hook it up to a regulated (40-80psi) bibb. Turn it on. Set the red needle against the black needle. Leave it for a few days and come back. If the regulator has failed, a surge will bump the red needle up and the black will go back to the original setting. If the pressure at the regulated bibb (also can use the washing machine hookup for the most reliable reading) is higher than 80, the pressure regulator is bad to start with. No need to leave it for days.
An expansion talk will help and if it's new construction it should have had one installed to begin with. Code or not, that's been the standard for a decade or more.
I'm thinking it's just a water hammer issue. The pressure regulator might not pick it up.
If a water heater is installed properly by todays standards, it should have a properly routed and sized TPR valve, as well as an expansion tank. If inside the home, it should also have a pan under it, routed to the exterior. The TPR should terminate into the pan in this case, where any leak is routed to the exterior and won't damage the home.
Character is not developed in moments of temptation and trial. That is when it is intended to be used.
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