With that setup pictured you would be basically dumping the pressure off the back of the fill valves and letting the air backfeed through them. It could work.... Another way would be to set it up like a hydro setup but you would need check valves, 1 lift valve for the front, 1 lift valve for the rear, Tee them off into individual corner check valves and then run your individual dumps off those. But for the price of the check valves you could just run 8 valves, Unless you can get check valves for nothing. SMC 3/8 valve 8 pack $210 plus shipping
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