Modular Thumper

Simple pot still distillation and construction with or without a thumper.

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Homebrewer11777
Posts: 471
Joined: Mon Oct 23, 2023 7:35 am
Location: New York

Modular Thumper

Post by Homebrewer11777 »

I've built a modular stainless pot still using a 15.5 gallon keg with 4" TC port from Kent. I've been very happy with the still, performance and product (bourbon and sugar washes on top of spent grains) I'm making.

However from time to time I read about steam stripping on grain and the idea that I could do this by adding a thumper to my pot still. I'd run the clear wash or water in the boiler and the thick stuff in the thumper. I think about this pretty much every time I'm squeezing my mash solids with my mop bucket.

I've found a site selling a stainless keg with a 6" TC port on top, a 1.5" TC port on wall near bottom for draining, and they offer a companion cap and dip tube. The cap has 3x1" TC fittings and a 1/4 inch NPT. One of the 1" fittings leads to a 1" diameter dip tube that when mounted terminates about 1" from the bottom of the keg.

My thinking is these two pieces could be a ready to go modular 15.5 gallon thumper/steam stripper. I'd probably put a PRV on NPT fitting and a ball valve on the extra 1" TC to break the vacuum when cooling.

Questions for this board are:
would a 6" top port be sufficient for cleaning out the muck?
would the 1" dip tube work for steam stripping?
is steam stripping corn/grain muck really any better than just squeezing it?
any safety considerations I am missing?

Thanks in advance. I can add a link but not sure if that is ok if it is not an approved vendor. Company is TCW Equipment.

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