Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Plumbing

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 11-29-2012, 02:31 AM   #1
Member
 
Join Date: Jan 2012
Location: PA
Posts: 143
Share |
Default

leaking relief valve


I just noticed small wet area next to my hot water heater and thought it was leaking but it was the relief valve slow dripping.

Not knowing what to do I shut off the supply and hot water out valves but it still was dripping then I pulled the lever on the relief valve and it shot out a small amount of water and then shut again. Seems to have stopped dripping.

What was the problem? Did I fix the problem? Do I need to replace the valve?

much thanks!

petros151 is offline   Reply With Quote
Old 11-29-2012, 05:26 AM   #2
DIY staff
 
Join Date: Sep 2009
Location: Kane county,Illinois
Posts: 21,123
Default

leaking relief valve


Why that is leaking--------------

1.it's working properly and there is excessive heat or pressure in the tank--

2.Something unusual happened that caused it to open (spike in pressure or someone touched it) and now there is lime or other crud keeping it open---

Those often leak after opening--Go buy a new one --check the lable on the old one to make sure you get the correct temp/pressure and change it---

If the new one leaks---you may need an expansion tank added to your system---not to difficult and required with larger heaters in most cases.

__________________
New members: Adding your location to your profile helps in many ways.--M--
oh'mike is online now   Reply With Quote
The Following User Says Thank You to oh'mike For This Useful Post:
petros151 (11-29-2012)
Old 11-29-2012, 07:51 AM   #3
Member
 
Join Date: Jan 2012
Location: PA
Posts: 143
Default

leaking relief valve


to replace the relief valve I would need to drain the tank down below the valve, and I imagine with the intake shut off closed I'd need to use the relief valve to let air in to drain it?


thanks!
petros151 is offline   Reply With Quote
Old 11-29-2012, 07:53 AM   #4
Retired from the grind
 
gregzoll's Avatar
 
Join Date: Dec 2006
Location: Midwest - Central Illinois
Posts: 13,721
Default

leaking relief valve


Popping it every month, helps to keep them working. As long as it is dry now, you probably fixed it by opening and letting it close. How old is the unit?
__________________
Ren: Now listen, Cadet. I've got a job for you. See this button? Ren: Don't touch it! It's the History Eraser button, you fool! Stimpy: So what'll happen? Ren: That's just it. We don't know. Maybe something bad, maybe something good. I guess we'll never know, 'cause you're going to guard it. You won't touch it, will you?
gregzoll is offline   Reply With Quote
The Following User Says Thank You to gregzoll For This Useful Post:
petros151 (11-29-2012)
Old 11-29-2012, 07:56 AM   #5
Member
 
Join Date: Nov 2007
Location: Nashua, NH, USA
Posts: 6,838
Default

leaking relief valve


Quote:
Originally Posted by petros151 View Post
to replace the relief valve I would need to drain the tank down below the valve, and I imagine with the intake shut off closed I'd need to use the relief valve to let air in to drain it?
Turn off the water heater heat. (For gas heaters you can turn the knob to Pilot)

Turn off the water.

Open a hot faucet upstairs.

Then drain the tank using the valve at the bottom. It is not easy to predict how much water you need to drain to get below the level of a side mounted relief valve.

The hot faucet should be gushing water before you turn the water heater heat back on.
__________________
Stop wasting time re-adjusting the pattern. Have several lawn sprinklers, one for each pattern.
AllanJ is offline   Reply With Quote
The Following User Says Thank You to AllanJ For This Useful Post:
petros151 (11-29-2012)
Old 11-29-2012, 08:11 AM   #6
Member
 
Join Date: Jan 2012
Location: PA
Posts: 143
Default

leaking relief valve


Quote:
Originally Posted by gregzoll View Post
Popping it every month, helps to keep them working. As long as it is dry now, you probably fixed it by opening and letting it close. How old is the unit?
INTERESTING! I have never opening it up, it is 6 yrs old. but after I opening it and then turned the water intake back on it kept dripping so it needs to be replaced but thanks for the tip makes sense to open it monthly. Hope other DIY home owners find this thread!
petros151 is offline   Reply With Quote
Old 11-29-2012, 09:26 AM   #7
Doing it myself
 
Alan's Avatar
 
Join Date: Apr 2006
Location: Crescent City, CA
Posts: 3,692
Send a message via AIM to Alan Send a message via MSN to Alan
Default

leaking relief valve


In 5.5 years of plumbing, i've only ever seen one T&P relief valve need to be replaced and it was on a commercial booster, not a residential water heater.


The first thing I would do is wait until you see it dripping. Check the pressure on the house. If the pressure is higher than say 80-100 PSI, relieve the pressure from the system. Check pressure again. If pressure stays high, you may need a new pressure regulator. If it has dropped after relieving pressure, it's more than likely a need of an expansion tank.

The T&P has a job, and it sounds like yours is doing it. Unless it has been leaking for a long long time, the valve should be just fine. Long periods of leaking can cause the seat to etch and cause them to leak even when closed.


It won't hurt to change it, just putting this here so you have something to go off of if/when it doesn't fix the problem.

__________________
Journeyman Plumber
Alan is offline   Reply With Quote
The Following 2 Users Say Thank You to Alan For This Useful Post:
oh'mike (11-30-2012), petros151 (11-29-2012)
Old 11-29-2012, 08:50 PM   #8
Member
 
Join Date: Jan 2012
Location: PA
Posts: 143
Default

leaking relief valve


Ok I changed the relief valve and now time to fill the tank (it's probably 1/2 drained) I don't know if I should use the relief valve while filling it ie. should I let it bleed air or should I just open up the hot water faucet closest to the tank? or both? I'm ready for a hot shower!

Thanks!
petros151 is offline   Reply With Quote
Old 11-29-2012, 09:06 PM   #9
Doing it myself
 
Alan's Avatar
 
Join Date: Apr 2006
Location: Crescent City, CA
Posts: 3,692
Send a message via AIM to Alan Send a message via MSN to Alan
Default

leaking relief valve


Quote:
Originally Posted by petros151 View Post
open up the hot water faucet closest to the tank? or both?
This. ^^^^^
__________________
Journeyman Plumber
Alan is offline   Reply With Quote
Old 11-29-2012, 09:08 PM   #10
Member
 
Join Date: Oct 2011
Location: pa
Posts: 4,243
Default

leaking relief valve


Quote:
Originally Posted by petros151 View Post
Ok I changed the relief valve and now time to fill the tank (it's probably 1/2 drained) I don't know if I should use the relief valve while filling it ie. should I let it bleed air or should I just open up the hot water faucet closest to the tank? or both? I'm ready for a hot shower!

Thanks!
just bleed air through the faucets...ben sr
ben's plumbing is offline   Reply With Quote
The Following User Says Thank You to ben's plumbing For This Useful Post:
petros151 (11-29-2012)
Old 11-29-2012, 09:29 PM   #11
Member
 
Join Date: Jan 2012
Location: PA
Posts: 143
Default

leaking relief valve


yes that was it I let the water gush out the faucet for a min then shut it and turned on the heat.... a perfect DIY $6.00 job. thanks guys!
petros151 is offline   Reply With Quote
Old 11-29-2012, 09:39 PM   #12
Member
 
Missouri Bound's Avatar
 
Join Date: Apr 2011
Location: Almost Arkansas
Posts: 2,764
Default

leaking relief valve


Quote:
Originally Posted by petros151 View Post
yes that was it I let the water gush out the faucet for a min then shut it and turned on the heat.... a perfect DIY $6.00 job. thanks guys!

Where in the did you find a relief valve for only $6.00??
__________________
Do you want it your way or the right way?
Missouri Bound is offline   Reply With Quote
Old 11-29-2012, 09:58 PM   #13
Doing it myself
 
Alan's Avatar
 
Join Date: Apr 2006
Location: Crescent City, CA
Posts: 3,692
Send a message via AIM to Alan Send a message via MSN to Alan
Default

leaking relief valve


Quote:
Originally Posted by Missouri Bound View Post
Where in the did you find a relief valve for only $6.00??
Right here


__________________
Journeyman Plumber
Alan is offline   Reply With Quote
Old 11-29-2012, 10:05 PM   #14
Member
 
Join Date: Jan 2012
Location: PA
Posts: 143
Default

leaking relief valve


Quote:
Originally Posted by Alan View Post
There's a little plumbing supply place in my little town and they have little prices! who needs HD ?

petros151 is offline   Reply With Quote
The Following 4 Users Say Thank You to petros151 For This Useful Post:
ben's plumbing (11-30-2012), gregzoll (11-30-2012), Missouri Bound (11-29-2012), oh'mike (11-30-2012)
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
How to diagnose gas valve problems Nestor_Kelebay How To Guides 28 10-30-2013 04:19 PM
Leaking ball valve in a gas line jshansen32 Plumbing 17 07-13-2012 09:58 AM
Leaking Pressure Relief Valve of Boiler rob07030 Plumbing 2 11-02-2010 07:11 AM
Water heater pressure relief valve confusion Flt_Simulation Plumbing 4 07-11-2009 10:02 AM
Resource for understanding gas valve? darsunt HVAC 19 02-03-2009 11:08 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.