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My heater control valve has a small leak it looks like water is dripping from it

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Not enough information to fully answer question.

Control valve is usually associated with the gas line and gas control valve.
There should not be water dripping from control valve.
Open following link to help identify source of leak on tank-type water heater
http://waterheatertimer.org/Water-heater-is-leaking.html

If you are uncertain about parts on gas water heater, I suggest calling service technician.
There are several advantages. The technician can service the appliance and ensure there is no dangerous gas leaks or dangerous CO vent leaks.
And if your water heater is rusted and leaking, then service technician can prevent a possible flood.

Some gas is heavier than air and settles to floor, so always check for gas smell near floor level.
The combustion product from a water heater contains odorless CO which is poisonous, and must be vented outdoors so it will kill other things besides you.
The service technician can also see maintenance issues since gas water heaters require yearly maintenance, and some require more frequent attention.
Finally the service technician can give you a few tricks and tips for taking care of your water heater.

If you add a comment with the brand, type and model number of water heater, I can possibly locate a manual for that product which can help both you and me understand your water heater better.

Upvote the help.
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

Posted on May 22, 2011

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1 Answer

I have a GE Profile Water Heater Model #SE40M12AA01.


I recommend safety changes to prevent ruptured water heater and assorted leaks.
135 degree hot water.
Maybe replace TP valve if it is dripping.
Drip pan under water heater with 3/4" drain line to outside.
Expansion tank on incoming cold water line to absorb pressure build-up, and prolong life of tank and plumbing.

Here's why:

1) Yes you can have scalding hot water.

2) I recommend 135 degrees since that will burn the evil right out of ya. And generally kill clothes washing bacteria.
http://waterheatertimer.org/How-to-adjust-water-heater-temperature.html

3) 150 is dangerous and can seriously burn skin in 1.5 seconds. Not safe around children and elderly.

4) Temperature settings on electric water heater are approximate, since thermostats are calibrated approximately, and read temperature through tank wall.

5) Also if you want to increase amount of hot water for high-consumption household, then setting tank temperature upward is one solution since more cold water is mixed with hot, so amount of hot inside tank goes further.

6) High temperature can cause TP valve to release water.
TP valve is pressure-temperature safety valve. Do NOT cap off.
Rating should be 125 psi and 180 degrees ... but all things water heater are approximate, and TP valves need replacement now and then.
It is not recommended by water heater manufactures to use 150 psi TP valve when water heater came with 125 psi. Rating shows in small print on end of TP. New TP valves sold at local hardware. Let tank cool before installing new one.

7) Higher temperature and high pressure can rupture tank.
Pressure over 80 psi shortens life of water heaters and plumbing fixtures. Put BTG100 pressure gauge on water heater drain valve to check pressure.

8) You need a drip pan with 3/4" drain line to outdoors, or to drain vent line, to prevent flood caused by ruptured water heater.
Turn water heater off when going on vacation.
Inspect water heater each 6 months.
Drip pan available at local home center or hardware:
http://waterheatertimer.org/9-ways-to-save-with-water-heater.html#drip

9) Heated water expands and puts pressure on tank and pipes.
Water does not compress... so when water gets hotter it expands against tank wall and against pipes.
Especially in closed system (check valve present) when system is without expansion tank.
Expansion tank is installed on incoming cold water line.
http://waterheatertimer.org/9-ways-to-save-with-water-heater.html#expansion

Oct 31, 2012 | Water Heaters

1 Answer

What should I do about a small leak on the side of my water heater?


What is the warranty on this tank?
Warranties covered failed tank.

Does the tank wall have a leak?
If the tank is leaking on top around inlet pipes, or leak is coming out of weld around TP valve, then water heater must be replaced.
Copy following link for troubleshooting and method for prolonging life of water heater by turning off heater except to make batches of hot water.
http://waterheatertimer.org/Leaking-water-heater.html

You can buy water heater at local box store. $350 for gas and $230 for electric, then get store coupon or offer 10% less than sticker price.
Electric water heater is simple to replace.
Gas water heater takes more steps, but how-to step-by-step appears on following link:
http://waterheatertimer.org/How-to-install-gas-water-heater.html

Oct 15, 2012 | Water Heaters

1 Answer

Drain valve plastic slow leak 81V-80D


If the drip is coming out of drain valve: Put a hose cap over end of drain valve.
If water is seeping out of cracked drain vale, then replace it.
If the leak is seeping around previously sealed threads, then tank may be rusted beyond repair.
http://waterheatertimer.org/How-to-replace-water-heater-drain-valve.html
http://waterheatertimer.org/Leaking-water-heater.html

Oct 06, 2012 | RHEEM 30 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

Just replaced Grohe wax cartrige 47 111 000, still have slow drip. HELP! thanks, James


besides the cartridge, the small brass screw/valve and its seat can cause this leak

Dec 10, 2011 | Grohe Grohmix Thermostat Valve & Trim -...

1 Answer

Water seems to be leaking from the top lid of my ge water heater


Make sure any water valves (Cold or Hot) for water heater are not leaking first. Gate valves may leak at the packing nut over time and drip on top of tank. If water is leaking from the top of the water heater itself the tank is corroded and water heater will need to be replaced.
RJ

Jul 16, 2011 | General Electric GE SmartWater Household...

1 Answer

We have a brand new rheem 40 gal elec water heater, after installation we have water leaking from the base of the relief valve, pooling up in the plastic fitting and making it way over the side all over...


Water heater should be set in a drip pan.
Otherwise, put 1 gallon bucket under TP release pipe to catch water.
http://waterheatertimer.org/Water-at-bottom-of-water-heater.html#drip-pan

When you say relief valve, I assum you are talking about brass valve located on top of tank or near top of tank. This is TP valve and a pipe connects to this valve and runs down to within 6" of bottom of tank. TP valve has a small lever on it.
If you are talking about tank drain valve located at bottom of tank, then add a comment.
Following information is for TP valve.

Dripping TP valve can be caused by 3 different thing:

1) Obstruction inside TP valve. Open TP valve for a moment to flush away particles and slowly lower lever back down. See if water stops dripping, if not, then replace TP valve

2) Defective TP valve: replace TP valve. Turn off electricity to water heater. Let heater cool for several hours so you do not get scalded. Close shut off valve located above tank on cold side. Open tub spout to relieve pressure, open tank drain or open TP valve and empty water below TP valve level. If TP is located on top of tank, not much water has to be drained. Tank is under press when hot, so be careful. Put teflon tape on new valve and install with big pipe wrench by turning clockwise until TP valve is very tight.

3) Overheating tank. TP valve is temperature-pressure valve. If tank water is over 150 degrees, the TP valve starts drizzling hot water to relieve tank pressure.
Lower tank pressure two different ways:
a) turn down thermostat
http://waterheatertimer.org/How-to-adjust-water-heater-temperature.html
b) install expansion tank on incoming cold water line
http://waterheatertimer.org/Water-at-bottom-of-water-heater.html#expansion-tank

Dec 19, 2010 | Rheem Water Heater Pressure Relief Valve

1 Answer

I have a small leak and it is dripping on the ground


You'll obviously have to determine where leak is coming from, then we can decide how to stop it. If it's the pressure relief valve outside, and it's only a small drip, that is normal, but you can try lifting arm on relief valve and cleaning it out a little to see if that helps clean it out. BE CAREFUL when water is hot, that you don't burn yourself, thus better to try it when cooled down. If it's dripping, or running out too much, it may be that water is too hot, or water pressure is too high as well, so check that as well. Usually smart to install a pressure regulator in line from hose to trailer. If your running off on board pump, not very likely that pressure is too high as they are usually set at 40-50 psi, which shouldn't cause that. If water doesn't feel hotter than before, then best to replace pressure relief valve, if that's where dripping (excessive) is coming from.

Dec 07, 2010 | RTO Atwood Water Heater - 6 Gal LP

1 Answer

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

Feb 23, 2010 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

Vulcan everhot water heater leaking at pressure relief valve


look can look to wear the water nis comeing from

Dec 13, 2008 | Water Heaters

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