Pro Sspunding ValveIntroducing our new line of adjustable pressure relief valves, commonly referred to as spunding valves. These valves enable Unitank fermenters to both ferment under pressure and condition beer before transferring to a keg. For use on tanks up to 20 bbl The scaled version includes an etched sleeve with a scale between 0 2. 2 BAR, along with a pressure calibrated spring. This version is perfect for a brewery that wants to be able to dial in pressures on