Abstract: This is a method for regulating pressure inside of a vessel containing a fermenting liquid for the purpose of regulating the amount of dissolved gas in the liquid. This is achieved by replacing the safety relief valve spring on the pressure vessel with a selected spring of known tension to maintain the desired pressure in the vessel. The method will vent excess pressure in the vessel automatically by having the spring compress more under the increased tension from the relief valve, thereby opening the valve and releasing excess gas until the pressure drops to the desired level and closing the valve.