CO2 regulators and nitrogen regulators. You have your choice of two different types of regulators We carry a variety of different gauges and the accessories required to install them in your draft beer system, including plugs and secondary regulators that might be required if you need different levels of pressure in different products in your system. Nitrogen beer regulators or co2 regulators are essential to controlling the flow from the keg to the faucet. These regulators give you the ability to control the pressure of the gas released from the tank you are using.