Build a Recirculating Draft Line Cleaning Pump Breathe new life into an old pin lock keg with gas and a liquid posts that will convert a Firestone pin lock keg to accept ball lock disconnects. – Fight the First Foamy Pint! I'm sure the answers are on here somewhere. Official specs for this specific model are 25″ tall and 8.5″ diameter. Made of food-grade anodized aluminum. Convert any pinlock keg over to a ball lock keg. Pin lock to Ball lock Post conversion. I did a search after scrolling thru a couple pages I didn't find any answers to my specific questions. 69. share. Convert Your Mark II Keg & Carboy Washer to a Recirculating Draft Line Clea… Click here for the pin lock … The CornyKeg pin to ball lock conversion kit allows you to convert any Firestone, Spartansburg or Hoover pin lock keg into a ball lock keg. Rebuilding & Reconditioning Homebrew Kegs! // ]]> //