Pot still column diameter

[deerburger1]

Got a 30 gallon boiler to use only for whiskey. I wanted to run a short 4 inch output and reduce down to 2 inch to thumper. But the price of 4 inch copper and fittings are outrageous. Is there any benefit to 4in over 2in if only doing spirit runs? If running it slow, would the 2in take longer or same time? Want to do it right and not have to redo this. Thumper is a keg and it will have to be reduced anyway I suppose. Just looking for advice. Any pre-made options? Have 6in ferrule and 4in reducer already.

[zed255]

On a pot still the riser (preferred over column, we tend to use column for a packed section used in a reflux still) diameter makes virtually no difference over a wide range of sizes. Using 4" material is a HUGE waste, 2" is already more than enough.

[StillerBoy]

Got a 30 gallon boiler to use only for whiskey. I wanted to run a short 4 inch output and reduce down to 2 inch to thumper. But the price of 4 inch copper and fittings are outrageous. Is there any benefit to 4in over 2in if only doing spirit runs? I

A 4" will serve no value and would be an overkill, unless you are planning on having the thumper set up at a great distant from the boiler..

Thumper setup should not be set up great distant from the boiler, but relatively close by otherwise there is great lost of vapor heat which isn't beneficial in a thumper run..

Mars

[deerburger1]

Thanks for the input.