A Schedule 40 metallic pipe is to used to run a gas line. The length from point of delivery to the most remote outlet is 180 feet and serves a 125,000 BTU boiler. What size line is needed? Note: This is the only appliance, there is a designated pressure drop of 0.5-inch and the Gas has a specific gravity of 0.60

A Schedule 40 metallic pipe is to used to run a gas line. The length from point of delivery to the most remote outlet is 180 feet and serves a 125,000 BTU boiler. What size line is needed? Note: This is the only appliance, there is a designated pressure drop of 0.5-inch and the Gas has a specific gravity of 0.60