• COOLER CONVERSION KIT (10 Gallon Coolers)
  • This shows the false bottom and KettleValve installed in a 10 gallon cooler

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Item #: J78
Our Price: $64.99
In Stock, Will Ship On 01/23/2017.
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This kit will convert all 10 gallon Igloo and all current (sold since 06/01/2015) Rubbermaid round water coolers into an insulated mash tun. Everything is included, the stainless false bottom, valve, connecting barbs, silicone seals, and tubing.

This includes our new more efficient false bottom with a wort pickup pipe that is held ¼" from the floor of the cooler for maximum efficiency, and a silicone lip for the false bottom to both securely seal it to the cooler bottom and prevent cooler scratches.

Fits all current 10 gallon Igloo® and Rubbermaid® (AKA Home Depot®) water coolers.

Just remove the valve from your existing 10 gallon cooler, and install the KettleValve with its patented O ring retaining groove on the outside, and the inside false bottom and hose attachment.  Includes a 3/8" outlet hose barb.

This fits all Igloo and current model (as of 06/01/2015) Rubbermaid/Home Depot 10 gallon water coolers. Click here for assembly instructions.

Note: This does not fit older Rubbermaid/Home Depot 10 gallon coolers with smaller 7/8" valve holes, only current ones with larger 1" diameter valve holes.


Average Rating:
(based on 8 reviews)

Showing 1 - 5 of 8 Reviews:

Review and Rate this Item
by Zach
on 12/25/2016
from Northeast
Good concept, bad product.
The kettle valve does not protrude far enough from the new 10gal igloo sidewalk to fully close the valve. Glad I finally have a false bottom; disappointed I have to get a different bulkhead in order to use the supplied valve. 1 star for usability, otherwise would have rated higher. Shipping was prompt. 

William's Brewing Responds: This kit has worked with all the Igloo and Rubbermaid 10 gallon round water coolers we have tried. Perhaps your 'igloo sidewalk' is a bit different?  Please contact us at 800-759-6025 or service@williamsbrewing.com and we can figure this out.
by Jeff sprecker
on 8/31/2016
from Chicago
#j78 10 gal conversion for mash
I agree the silicone seal needs some revision. Hard to keep on until in place.i might suggest a wider silicone band..I would pay for that!
I've been using Charlie P.s zap pap since 1993. So I think this is the best priced easiest thing to use ever. Frugal is my middle name. This is the best price out there!! Thank you for carrying such a quality product. Next on my list is a better brew pot.
by Eddie
on 8/30/2016
from Florida
Stuck Sparge
Had a stuck sparge. The culprit? The  inside silicone hose came loose. The heat softens the hose loosening your tight fit. You must clamp It!  Had to  transfer everything to another mash tun. What a mess!!
by Danny
on 5/29/2016
from North San Diego County
Cooler Conversion Kit
I used this product on my H/D cooler.  It was easy to install and does not leak.  The silicone lip is somewhat a pain in the hips to put on the false bottom, but, I am sure I will figure out an easier way.   
This product worked good on my last all grain brew and I did not have any issues with the small hose commit loose.
Williams Brewing has become my go to place to shop for brewing equipment.  Customer service is great and cheap one day shipping to So Cal is fantastic.
by alex
on 4/19/2016
from Litchfield
Its Perfect
Leak free and easy to install in a home depot 10 gallon cooler. I read some people have trouble with the internal hose getting warm then slipping off, but its such a tight fit I don't see where it could go. I didn't experience any problems and made my first batch of all grain beer! 

I'd recommend this to anyone
Review and Rate this Item
Tom Tibbets
12/9/2016 5:35:30 PM
Will this work with the 10 gal igloo coolers from Lowes?
We have not tried this, but based on the fact that this looks very similar to 10 gallon Igloo coolers we have tested, it will work.
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