water heater relief valve


  #1  
Old 02-26-08, 03:19 PM
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water heater relief valve

just to change the relief valve do you have to drain water out , there a way not to drain but don t know how
 
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Old 02-26-08, 03:31 PM
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It only has to be drained to below the T&P valve. There should be a valve at the bottom of the tank. It may have a handle or just a screw slot, that will drain the water. If the area is finished or no floor drain is handy, connect a hose and run it to a sink or even into a bucket. You may have to drain 5-10 gal. If this is an electric heater, turn off the power.
 
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Old 02-26-08, 05:37 PM
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I've never had to drain to change one. Turn off water, open sink hot side, close sink hot side. Now you have the pressure off the tank. Unscrew valve and install new one. As long as the valve actually shuts water off all you will get is a gurgle gurgle. Ofcourse you can't dilly dally around. You want to have the new valve ready to go.
Make sure there are no hot water faucets on anywhere in the system.
 
 

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