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How do I replace hot water pop off valve?

I have slight leak at bottom of pop off valve. how do I replace ?

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  • 51 Answers

Shut off water,gas or power
Then drain about half of the water from the heater.
The pop off valve unscrews from the tank.
Some times its rusted really bad and will break off because its soft bras. If that happens then get a inside the pipe pipe wrench and try remove the broken valve. If that fails then you need a new water heater.
There are a few types of valves some are lomger than others and some have a 90 degree turn. best thing is to get your old one out(if posible) before you buy the new one so you get the right one.
Good luck

Posted on Jan 12, 2013

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Posted on Jan 02, 2017

WhoDoctorK9
  • 41 Answers

SOURCE: the pan at the bottom of the water heater is

Now, the pipe that leads from the base water pan should lead to the wall where the water can go outside. If you see water in it, but very little in the pan, then you have water from outside (rain or water hose) coming inside the house. You should have a valve, usually on the side of the water tank near the top that looks like brass with a silver 'flip' handle on it. There may be some plastic pvc pipe attached to it as well. If the water is coming from this valve then you need to have the valve replaced. You may get some extra time by gently tapping the valve where the handle is attached with a mallet so that the valve seats itself. This valve is a pressure release valve. If the water in the tank gets too hot or water pressure gets too high, this valve will open to relieve that pressure. it doesn't happen often, so if this is the first time you have seen it and it doesn't seem to be leaking any more, I would not worry about it. If it is still leaking, you can get a replacement relief valve from your local Lowe's or hardware/lumber yard. They usually cost less than $20 USD

Posted on Mar 29, 2009

  • 686 Answers

SOURCE: Relief valve constantly releasing water.

lower your thermostats a bit. If your temperature is set to the hottest setting, then chances are no relief valve will do

Posted on Jan 08, 2009

gary1121
  • 332 Answers

SOURCE: how to check thermstat pop off valve starts

you might want to check the water pressure going into the unit, it should only be no more then 75lbs anything over that will make the top pressure valve blow off

Posted on Jun 27, 2009

  • 35 Answers

SOURCE: pop off valve dripping Rheem 50 gal electric valve at bottom

If you are reffering to the drain valve at the bottom of the hot water tank. It may be leaking due to the O ring being cracked or worn out. You can either drain the tank and replace the valve or you can buy a hosebib brass cap and thread it on the existing valve. There is no cause for alarm when doing this as this valve is just to drain the tank when replacing your hot water heater

Posted on Feb 25, 2010

  • 409 Answers

SOURCE: leaking pressure relief valve

what is the water pressure on the cold side? You may need to install a pressure reducing valve at the water heater inlet to reduce inlet pressure and keep pop off valve from opening when not needed.

Posted on Mar 10, 2010

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This is unusual. The first thing to ask is what is the water pressure reading at your location? It could be too high. That would cause the valve to be close to opening and leak. The second could be something to do with the thread area that the valve screws into. What is the age of the heater and has it ever been dropped or damaged? Third is how hot is the water temp?

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sounds like you have a power problem. or worst than that a leak . So lets look at the leak first. Turn off the water supply at the water heater on top. This valve should be on the cold side of the heater on top.

Turn it off, check and see if you have pressure in the house by turning on a faucet. It should run for a second then stop. That is good if it does. Leave the valve off on the heater and check that your breaker is on. Reset the breaker by turning it on and off.

Wait about 2 hours turn the heater back on and check to see how hot the water is hot then you might have a leak in the building. If there is not or little hot water. Check the wires where it connects to the water heater. You might only have one wire that is connected right.

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Hot water heater is constantly runnin and sds like water is running. the noise seems to be coming from the emergency valve area. there is water pooling around the bottom of the heater


Open following link to identify specific leak and remedy:
http://waterheatertimer.org/Water-heater-is-leaking.html

If TP valve is leaking: replace TP valve:
http://waterheatertimer.org/How-to-replace-TP-valve.html

If tank is rusted and ready to rupture, then turn water heater off:
Over next days, turn water heater on for short periods to make hot water when needed, then replace water heater.
http://waterheatertimer.org/Emergency-steps-for-leaking-water-heater.html

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Is the water extremely hot?? If so, then I would probably recommend new thermostats for top and bottom of the unit. The only time these temperature related overflows are activated is when the water temperature reaches a certain temperature and they are there to safely relieve the pressure/temperature so the unit doesn't explode.

If water is not terribly hot from normal, then I would say the TMP valve ( the valve that you are referring to) needs to be replaced and can be done easily by turning water off, and picking one up at any home improvement store for your model and just unscrewing the one you have out, putting on pipe thread sealant on new and rescrewing the new TMP valve into the tank.

Good to go after that,

Let me know!

Chip

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Pop off valve dripping Rheem 50 gal electric valve at bottom


If you are reffering to the drain valve at the bottom of the hot water tank. It may be leaking due to the O ring being cracked or worn out. You can either drain the tank and replace the valve or you can buy a hosebib brass cap and thread it on the existing valve. There is no cause for alarm when doing this as this valve is just to drain the tank when replacing your hot water heater

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or is steam expelled when releif valve opens
t-stat not opening gas valve sticking partially open
bad high limit bad pressure releif valve no expansion tank to allow for thermal expansion if steam is present and unit is boiling water inside replacement of water heater for safety concerns,would be reccomended if only water and pops couple of times water temp not over 140 degrees after most hot water has been used out of tank and is reheating most of capacity probably lack of expansion tank as the releif valve is the final safety device on a water heater is of great concern
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