Take this Tek and upgrade to

with one of these

Add a 3/4" barb to the bulkhead

Add a 5psi PRV

to the 3/4" bung on the lid.

Use a 2" PVC threaded adapter to add a T with 2x ball valves, one with a 3/4" barb, the other with an air hose quick connect (male)

Use a 3/4" hose to connect the bulkhead barb to the barb on the lid.

Using a compressor, we can now move ethanol from one vessel to the other by applying positive air pressure to the head space of the barrels.