Hi. I am looking for bypass valves for an inside the wall application. Every recirculating pump I can find calls for the valves to be installed under the sink (instead of inside the wall). Thanks.
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Since you said "under the sink" are you referring to a circ pump that forces hot water into the cold side?
I would prefer not to force hot water to the cold line. I'm just looking for a way to heat up the hot water somewhat quickly (it now takes 2-3 minutes to get hot). We are doing an addition and moving the bathroom even further from the hw tank. My plumber said the only valve he knows of would be mounted outside the wall. Thanks
Well if you can't install a separate circ line back to the water heater.
There is only two options I can think of .
1 Use a point of use water heater one to two gallons but when they run out of hot water they fill up with the cold water that was stagnant in the line giving you a temp drop until the hot water reaches that point from the source.
2 is using a circ system that forces hot back into the cold until the desired temp is reached. These systems work on motion detectors, timers, or door switches so they don't run all the time.
As far as bypass valve location under sink is common if your worried about appearance like on a pedestal sink you can use a access door to conceal the valves. It is more work but final appearance can be pleasing.
Remember there is more than one way to skin a cat
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