If you own your house, you can service it and upgrade it yourself, in alaska. You don't need special anything but a gas tech needs to pressure test/stamp a new houses. I worked for the gas company and now own a bussiness building alternative fuel combustion systems and controllers. The gas specs vary from place to place but most cities do not supply enough flow, necessarily. If you keep your forge smaller than a fridge, you can always install additional burners. Black iron pipe isn't expensive and replumbing of your heat lines most likely isn't required. If you need additional pressure or a larger regulator, it's a simple call to the gas company but they may want to inspect this "firepit" before installing a larger regulator. I don't regret my ng forge. 1/2 psi and 6.8ish w/c ran off 1 1/4" BIP with a 250k btu valve controlled by a pressure combustion fan pressure switch (Old modine garage heater). I don't regret it one bit.
