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50′ Dual Coil Copper Immersion Chiller Build
This is my dual coil chiller. I opted for 3/8″ ARC Type L tubing below the split, and 1/2″ above the split. The 1/2″ parts are rigid Type K copper.
I needed reducers from 1/2 rigid to 3/8″ tubing in order to make the connections. I couldn’t source them locally so I needed to order them online. Because of the switch from soft tubing to rigid, you actually need to use 1/4″ to 1/2″ fittings. They are pretty rare. I found some on Amazon that were pretty pricey for what they were, but they got the job done.