This is the system we use to conserve water while waiting for the shower (or sink) to get warm. Pushing a button allows water to flow up to the hot side of the tap and then recirculate back to the tank. We used sprinkler valves and arcade pushbuttons for the controls.

This is the system we use to conserve water while waiting for the shower (or sink) to get warm. Pushing a button allows water to flow up to the hot side of the tap and then recirculate back to the tank. We used sprinkler valves and arcade pushbuttons for the controls.