Re: air valve set ups
You are on the right track. Yes, 8 valves is the optimum set up. That allows four corner control and prevents air transfer between bags.
I have mine set with 5 switches. One for up/down at each corner and the 5th one for dump.
Unless you want to clown, 3/8 is plenty fast and fittings are cheaper. There is nothing wrong with a 1/2" system if you want super fast. You can put regulators on the line to slow it down if need.
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