Ok so this is a little of topic but that's why it here, I am building a new maple syrup avaporator and want to use a steam trap bubbler system. the idea is to collect the steam pressure from one pan and pipe it up and over into another pan to bubble and preheat sap. the pans I am making will be 30" by 20" with a formed bottom to give me about 30 sq inches of surface to the fire. I figure this is going to boil about 4 to 5 gallons an hour.
My question is, if I am boiling that much water IE steam out how big and how many vent pipes should I have installed so it will always vent and never build up any pressure, I am planning on using 7 tubes 1/2" in diameter and putting 2 low pressure blow of valves just to be sure.