Splitter kit Choose your filler:Duofiller G2/Mono G2 Consider using a check valve

Consider using a check valve to prevent liquid backflow from the keg and into the CO2 system if the keg and the Duofiller share the same CO2 source

A spare purge valve for Duofiller G3 or Mono G3

Duofiller Core (G3) uses pinch valves that flatten a soft tube to shut off the flow

Spare push button

Splitter kit Choose your filler:Duofiller G2/Mono G2 Consider using a check valveIf you want to connect a second Mono to the same keg you need this splitter. It can not be used to split for adding a second Duofiller. There are different dimensions for Duofiller G2 vs Duofiller G3, make sure you choose the correct version. If you are buying a Duofiller, the splitter kit is already included.