The Beer Cider CO2 Gas Regulator (Primary) is a wall-mounted regulator designed for beer gas in pub, man cave or restaurant settings. This unit has a knob adjustment type and is sold individually. It is a key component for controlling the flow of carbon dioxide gas into draft beer systems, ensuring fresh and perfectly carbonated beer every time. With its sturdy construction and easy-to-use design, this gas regulator is a must-have for any establishment looking to serve top-quality draft beer.