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Yes... yet another version of a keg and carboy washer...

The first time I heard of a "keg washer" was listening to Dr. Scott describing his brewing gadgets on The Brewing Network's Homebrew Gadget Show (clip is about 105 minutes in) back in December 2005. I also came upon a cool post by Dave @ slobrewer.com on how to build his version of a keg & carboy washer.

Most designs seem to favor a 1/6 horsepower sump pump (Little Giant 5-MSP) that outputs about 1200 gallons per hour. I opted for a cheaper, more powerful 1/3 HP sump pump that outputs 3360 GPH. The pump is a factory-reconditioned Wayne SSCDU790 1/3 hp Cast Iron Sump Pump w/ Stainless Steel Motor ...
and I picked it up on Amazon for $62 delivered. The Little Giant pumps were closer to $100 (albeit not reconditioned).





One mistake I've seen others make is putting a ball valve before the ball-lock fittings. This is unnecessary as the ball-lock fittings are quick-disconnects and stop any flow when removed from the posts.


Initially, I had planned to use 3/4" PVC pipe for the "nozzle". It worked fine for cleaning the kegs but seemed a little tight for the carboys. The neck of the carboy is pretty narrow and, because of the powerful pump, the carboy would begin to fill with water. I removed the 3/4" PVC pipe and replaced it with 1/2" copper.


The black fitting shown is a flexible rubber pipe reducer (4 inch to 3 inch). The 4 inch side fits nicely around the opening of a corny keg. (note: see update below...)


Some notes on use...
I use about 4 tablespoons (about 2 ounces) of PBW in 5 gallons of water. (Much less than the 1 to 3 ounces per gallon that 5 Star recommends.) This will begin to foam if the water is cold. (PBW does not foam as much when hot.) To reduce the foaming, start with hot water or you can eliminate the foam by squirting a dropper full of foam-control (Fermcap-S) into the bucket. As the pump runs, the water will heat up. With air and water at about 70F, the water temperature reached 130F after running for 90 minutes.

Doctor Scott's version:
Doc's version has some quick-disconnects so that different attachments can be added to the pump. He's also got a second set of ball-lock fittings that he can hook to a faucet or hose and rinse the cleaner from the keg posts and dip-tubes.


Tasty McDole's version:
Tasty included a little platform on his version to support the keg (instead of using the bucket's lid like I did). His platform is made from a cutting board. I'm not sure if he cleans carboys on it (I believe he uses conical fermenters) but it looks like you could throw a carboy dryer on the platform too.



UPDATE:
Since building this I've come across another version... The pictures below were posted by "atfan" on The Brewing Network's forum. It looks like he didn't use a flexible reducer like I did and just made a bigger hole in the bucket's lid. I like this better than mine as it's a little simpler and the keg will always stand vertically (mine tends to lean a little bit). I also like the use of a bucket dolly. Nice!


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Comment by Christian Mosebach on January 17, 2010 at 9:26pm
Have you tried running sanitizer with this pump setup? I'm guessing you'd have to use the low-foaming 5star sanitizer. Do you have a parts list on the different fittings/couplers/etc... on what you needed to build this?
Comment by Sam Scott on January 17, 2010 at 9:57pm
Haven't tried sanitizer but I would think the 5-Star Saniclean would work fine (Star San would foam too much). I don't have a parts list handy but when, I get a chance, I'll go over it and make one up for you.
Comment by Christian Mosebach on January 21, 2010 at 8:43pm
I'm upgrading the entire brewery in the next month or so, and this would be a great addition to it.
Comment by Brian Murphy on January 30, 2010 at 3:10pm
I would love you to post a parts list here as well. Thanks!

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