Sorry it took me so long to respond on this...
My setup has held up fine after almost 3 years in use and 40+ brews chilled. I just have mine suspended with bungee cords on the back of my brew stand, and the only "issue" is that the PVC pips will sag from the heat over time. So I've flipped it over a couple of times. What I should do is mount it to a piece of plywood using pipe straps so that the PVC is fully supported in a couple of spots in between the tees.
As to using 3/4" PVC I can't say how that would impact the performance. I would stick with the 1" for the minimal cost differential.
My setup has held up fine after almost 3 years in use and 40+ brews chilled. I just have mine suspended with bungee cords on the back of my brew stand, and the only "issue" is that the PVC pips will sag from the heat over time. So I've flipped it over a couple of times. What I should do is mount it to a piece of plywood using pipe straps so that the PVC is fully supported in a couple of spots in between the tees.
As to using 3/4" PVC I can't say how that would impact the performance. I would stick with the 1" for the minimal cost differential.
