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Brian
Brian, Architect
Category: Home Improvement
Satisfied Customers: 2978
Experience:  Licensed Architect- 17 years, L.E.E.D. AP
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Hot water is leaking from the overflow pipe ...

Customer Question

Hot water is leaking from the overflow pipe constantly. I have to keep a very large container under it at all times and I have to cut off the water supply completely when I''m not using the hot water or the container floods over onto the floor. I''ve opened and closed the TP valve, drained the tank completely to flush out any sediments, but it continues to leak regardless. Please help.
Submitted: 6 years ago.
Category: Home Improvement
Expert:  Brian replied 6 years ago.

HelloCustomer

Welcome to Just Answer.

This is not a drastic situation, but it is good that you noticed it and now it should be fixed. The relief valve is actually a safety device to keep the water heater from exploding from pressure build-up. A leaking valve is a good thing, since it means that it is doing it's job. However, you do not want it to continue to leak, so you will need to correct the cause.

The valve can begin to leak water either because the valve has become defective, or the temperature/ pressure in the tank is getting to high.

Before replacing the valve, you should inspect the TPR valve by manually raising and lowering its handle, a few times to see if there is just sedimentation or mineral build-up causing it to leak; be sure to have a bucket to collect the water. Water will run out of the bottom of the tube when lever is lifted and should stop when the lever is released. If water continues to leak, then either the defective TPR valve needs to be replaced and/ or the pressure is too high.

It is a relatively easy procedure for the average DIY to replace the valve, if necessary.

Click on this link to learn more about testing for a defective valve & testing for high pressure. Also, instructions on how to replace the valve are included.

 

If you need further help or clarification on this question, please reply to this post.

Best of Luck, Brian

 

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