Forum Discussion
chr_
Jun 21, 2015Explorer
PackerBacker wrote:
Just curious, I wondering why there is more than one bypass valve for the hw tank. I've owned many rv's and have never seen that before.
Three valves are needed to properly bypass the heater. The one in the middle needs to be opened and the other two closed. this routes the water past the heater. If there is only one, say in the middle, the tank would still be connected.
If there was one on, say the output or input only, then the water would not flow at all. This scenario would be a "shutoff" valve only. That is probably what you had. A shutoff so you could drain it, perhaps.
The whole three valve setup seems to be something the mfg's are giving us so we don't have to add them ourselves. Also, if one mfg starts doing it, they all soon follow.
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