Adding a 2" Copper collar with gasket, clamp and stainless lid to your still will allow you to run both propane and electric with the addition of the 2" element housing, element, and controller. This will give you future flexibility to run multiple heat options depending where you are.
This Stainless Steel SS304 4" to 2" Tri-clamp Reducer Coupling will easily convert or adapt a 4" sanitary distilling ferrule to a 2" sanitary disitilling ferrule and vice versa.
This Stainless Steel SS304 4" to 2" Tri-clamp Reducer Coupling will easily convert or adapt a 4" sanitary distilling ferrule to a 2" sanitary disitilling ferrule and vice versa and allowing for a 1/2" NPT Female fitting to be used for a possible temperature gauge or probe.