I live in a home in Birmingham, AL that was built in the mid-fifties. I am working on correcting some problems due to improper work done by the previous owners and am starting to completely re-pipe my natural gas system that feeds a furnace, water heater, stove, gas dryer, and fireplace log. I would like to add some additional gas appliances in the future. I have done some research and have a basic understanding of sizing the piping according to the amount of gas and distances for the various appliances. Presently, there are three ¾” branch lines from the meter that are reduced to ½” to the appliances. I would like to run two ¾” or (preferably) one 1” line from my meter outlet, reduced to ¾” and ½” to simplify the system and supply present needs and future additions. I know this has been discussed before, but I wanted to be certain I understand that it will work. I don’t understand how the ¾” meter outlet can supply the larger line without changing the pressure (I am assuming the pressure is .5).