http://www.micromatic.com/draft-keg-beer-edu/pressure-side-beer-dispensing-articles-cid-2673.html http://www.micromatic.com/draft-beer-gas-regulators-aid-116.html A gas regulator is used for maintaining carbonation and pressure for the dispensing of draft beer from keg to faucet. The intent of Breweries is to keep the quality of their beer perfect from brewing until dispensed and consumed by the end user. aid-116 http://www.micromatic.com/draft-keg-beer-edu/dispensing-beer-blended-gases-aid-119.html During the past decade or so, utilizing a mixture of Carbon Dioxide (CO2) and Nitrogen (N) gasses for dispensing draft beer has become enormously popular at retail outlets such as bars, restaurants, pubs and major venues. Driving this popularity is the dispensing of stout or nitrogenated draft beers. aid-119