Hot water tank expansion tank vs T&P valve.
I’m a (want to be) handyman and I have been reading the post on, “Imploding water heater”. I’m still a little confused why the T&P valve didn’t open, before the damage accrued to the water heater. Did the valve malfunction? If so, would it be a good idea to install a “T” coming out of the tank, and install two valves, for a back-up valve?
Thanks Jimbo for the reply
If the hot water tank, (on the other thread, “Imploding water heater?”) imploded, wouldn’t the nipples on the top of tank be pushed outwards, (away from the vent)?
Originally Posted by jimbo
If it did implode, I can see why the T&P valve and the expansion tank wouldn’t have saved it. But if it did expand with excessive pressure, that means that two devices failed. I have learned on the forum, that even the expansion tank will only relieve so much excessive pressure, so that means that there is only one device really saving the tank from excessive pressure….the T&P valve….kind of scary!