Hello ZCat, you may be misinterpreting the pressure from the flow and forgive me if I am misunderstanding you. If he has 25 psi of pressure on his gas line he can still have a wide range of flow rates. Think of it in terms of a fire hose versus a garden hose, they can both have say 50 psi of pressure, yet the fire hose will deliver way more water due to it's larger diameter, thus more flow. Regards, aevald