The G3 Ball Valve Adapter simplifies installation of the FireBoard Drive Blower G3 on drum and cabinet smokers equipped with standard ball valve fittings. Simply remove the adapter plate tab, install the ball valve adapter, and secure with the included thumb screw and nut. Compatible with common thread reducers and enlargers for versatile pipe threading applications. Note: Not compatible with the original Drive Blower 20 CFM model. FBBL-G3BVA