Reddit reviews 2" Copper and Stainless Pot Still Column & Built in Condenser, Whiskey Column
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2" Copper and Stainless Pot Still Column & Built in Condenser, Whiskey Column https://www.amazon.com/dp/B01N764Z58/ref=cm_sw_r_cp_apa_i_awXyCbFY9CA4D
Assuming i understand your question there's this. I've seen it used on 15gal kegs with no problem