In my home, I have a main natural gas line coming in at 2 PSI, and then a branch goes to a Maxitrol 325-3 regulator, which then goes to the gas lines feeding my furnace, water heater and dryer. I assume that regulator steps the pressure down to 1/2 PSI? Is that correct and isn't that what those appliances require? I don't see any other regulators between that one and those three appliances.