After installing a closed loop, timer controlled recirculating pump (to maintain hot water at use points with a dramatic reduction in cold water wastage) it was determined that due to pump design, a "back-flow" or "check valve" fitting was required to prevent cold water from flowing back up the loop when the pump was not running, overpowering the
...Read MoreRead more about After installing a closed loop, timerhot water flow to shower, etc.
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A win-win all around and super happy! So happy I've bookmarked this site. Read LessRead less about After installing a closed loop, timer