[davepl]

Originally Posted by Mike C

A single pass or regular style radiator has the inlet/outlet on opposite sides. A double pass puts them on opposite sides since it turns and goes back where it came from, right? Seems a triple pass would have the same inlet/outlet orientation as a single pass. What am I missing?

I wondered that myself. Once across should put them opposite. Twice across should put them on the same side. Thrice should put them opposite again.

I don't know where triple pass came from, but you've convinced me. I'm calling it a two pass or double pass from now on!