Quote:

I've been trying to devise a way of building a bypass (T on the hot line with a valve to divert water to the fresh holding tank), then use some sort of temperature sensor on the water line, shutting of the bypass, diverting the hot water to the tap and then using the sink.

tony lee wrote:



Nothing worse than trying to get a few days boondocking and having to watch "gallons" of water running down the drain. I know because mine suffers the same problem.

I'm building a new camper box on the OKA that I use for desert trips back home and there water is a very major problem - lack of that is.

I'm doing what you suggest. Placing a 12V solenoid valve right at the back of the shower mixer and another one below the sink to divert water back to the tank .
Difference is that I will just have a manual pushbutton on the wall so before turning on the tap, we will just push the button for X seconds - determined from experience - and then release it and turn the tap on. I also save more water by having a water temperature tempering valve set to give the correct shower temperature and another one set for high enough for dish washing so there is no fiddling around getting the temperature correct.

Reason for not having the process automatic is to reduce complexity. If you don't want to manually start the process then you would have to add a flow switch as well. Just count to ten or whatever and let up on the button.

FuzzyKnight wrote:

Heck we just put a jug under the faucet and then use that water to flush the toilet!!