Posted by The Local Plumber on November 29, 1999 at 03:40:19:

In Reply to: T & P valve posted by russell e. cook on November 29, 1999 at 02:59:37:

: about 2 cups of water drips out of T & P valve after three people have taken baths. This is a new water heater and has one T&P valve replaced. The water heater has been replaced and it has the same problem. This is a low boy type heater.

Sounds like a pressure problem to me. When there is a period of no use, the water heater is building up pressure inside the tank. When this happens the T&P valve is designed to do exactly what it is doing, let out some of the pressure.
Call a licensed plumbing contractor to install an expansion tank on the cold water service inlet to the heater. This should take care of your problem. Good Luck.

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