Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.
On a “closed loop” system the Loop Pumps which are normally externally installed as the industry norm are internally installed, pre-wired and pre-fused. Therefore the only external parts on a closed loop are two 3 way purging valves. The type of pipe that is generally used is fuse-able, High Density, Polyethylene pipe.
