Pingel Power-Flo High-Volume Petcock For Harley The Pingel Power-Flo High-Volume Petcock is specifically designed for the 22mm bungs on OEM gas tanks. You'll love the more compact installation that saves an additional 1/4 installed height over the standard Power-Flo. The Power-Flo High-Volume Petcock is solid brass and chrome plated with all stainless-steel interior. Permanent stainless steel filter and nut included. Features Designed for 22mm bungs Compact design Solid brass Chrome finish Stainless steel permanent filter Nut included