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Old February 7, 2009, 08:37 AM
cadaveca cadaveca is offline
Join Date: Jun 2007
Location: Edmonton
Posts: 1,628

If your rad is doesn't matter, as the water will flow up one side and down the other no matter where the barbs are(unless you have a single-pass rad)....if horizontal, you're adding a bit of vertical pressure the pump must deal with(all pumps have a "head" rating, or how high vertically they can pump), and you generally want to keep vertical tubing lengths shorter than the total head the pump can push. This also includes the vertical bits of the rad as well. The more vertical length, the harder the pump will have to work.
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