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if I am running supply and return piping for something that requires 1” and it is tying into a boiler that only has 1/2” tappings, how can I still het the flow rate I need? I would think once you drop down to 1/2” you can only get however many GPM through that 1” pipe as you can get through the 1/2” pipe. Kind of like if you take a 4 lane highway, close it down to one lane, then open it back up to four lanes. You are only going to get as many cars through that can fit through the one lane section. I’m being told by an engineer to do something that seems to me like it can’t work. I know I’m probably wrong but I can’t understand how it can work.