Relief Valve - Plumbing - DIY Home Improvement | DIYChatroom

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


Thread Tools Display Modes
Old 03-05-2010, 04:37 PM   #1
Join Date: Mar 2010
Posts: 1
Rewards Points: 10

Relief valve


I have a 50 gal. gas water heater and water has been leaking to the outside from what I believe is the P&T relieve valve. Am I right in my assuption?.

If the P&T valve is the problem, what is the best method to remove it from the water heater to replace it with a new one?


Last edited by awoln; 03-05-2010 at 04:39 PM. Reason: Incomplete
awoln is offline   Reply With Quote
Old 03-05-2010, 04:51 PM   #2
the Musigician
DangerMouse's Avatar
Join Date: Jul 2008
Location: I'm right here!
Posts: 10,404
Rewards Points: 2,000

Relief valve

Hi and welcome to the forum!

No need for the formality here, we're all related, therefore, we're family!
(unless of course, you're an alien) A picture is worth a thousand words here more than anywhere.
Does the valve leak constant? How old is the unit?



[SIGPIC][/SIGPIC]Click here to see some of my original magic tricks and trick boxes!
DangerMouse is offline   Reply With Quote
Old 03-05-2010, 08:53 PM   #3
Join Date: Nov 2007
Location: Nashua, NH, USA
Posts: 7,440
Rewards Points: 2,982

Relief valve

Turn the heater off.

Turn off the cold water supply to the heater, open a hot water faucet upstairs, and drain about 10 gallons from the heater drain valve down at the bottom. (This last step is somewhat trial and error, you need to get the water level in the tank below where the P&T valve screws in.)

Unscrew the old P&T valve and screw in the new one.

Before turning the heater back on, you should have water pouring from a hot faucet to prove that the tank has been refilled.
Do you get coverage you can count on? From the bag of fertilizer? From your lawn sprinklers?
AllanJ is offline   Reply With Quote
The Following User Says Thank You to AllanJ For This Useful Post:
NHMaster (03-05-2010)
Old 03-05-2010, 10:31 PM   #4
Join Date: Feb 2010
Location: Michigan
Posts: 426
Rewards Points: 302

Relief valve

make sure to use teflon tape and pipe dope
plumberinlaw is offline   Reply With Quote
Old 03-05-2010, 10:44 PM   #5
Doing it myself
Alan's Avatar
Join Date: Apr 2006
Location: Crescent City, CA
Posts: 3,766
Rewards Points: 2,032
Send a message via AIM to Alan Send a message via MSN to Alan

Relief valve

has it always done this, or is it just recent?

Did you notice a boost in overall pressure in your house when it started happening?

T&P doesn't usually just start dripping. Usually playing with it and getting sediment stuck in the seat will make it drip. If there's a problem with the system (temperature too hot, pressure too high) that will make it run.
Journeyman Plumber
Alan is offline   Reply With Quote
Old 04-05-2010, 09:02 AM   #6
Just call me Andrew
Join Date: Mar 2009
Location: Albany, NY
Posts: 2,260
Rewards Points: 1,016

Relief valve

Friend of mine has the same problem. About a 10-year old unit gas heater, I think 50 gallon. He didn't notice an increase in pressure or temperature in the house. I guess it can't hurt to try and replace the valve, since they aren't too expensive. If it it still leaks, Then the problem is elsewhere.

Is there a recommended brand for the T&P Valve?



secutanudu is offline   Reply With Quote

Thread Tools
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 05:19 PM
leaking pressure relief valve on heating water boiler benjamintr HVAC 13 01-29-2011 06:32 AM
Vacuum relief valve? walker44 Plumbing 10 08-30-2009 05:33 PM
Water heater pressure relief valve confusion Flt_Simulation Plumbing 4 07-11-2009 11:02 AM
Best 1/2 inch water shut off valve. Nestor_Kelebay Plumbing 10 07-25-2008 12:16 PM

Top of Page | View New Posts