2-Way Brass CO2 Gas Manifold - 5/16" Barb with Check ValvesThe 5 16" Brass CO2 Manifold is a professional solution for splitting a single gas source into two independent lines. Each of the two outlets features a 5 16" hose barb and an integrated shut off valve with a one way check valve. The check valves are a critical safety feature, preventing beer or soda from "backing up" from one keg into the other or the regulator if pressure is lost. Constructed from solid heavy duty brass, it is built for a lifetime