Custom Draft Tower and Kegerator

Bottling beer is a pain in the (enter choice word here). I brewed 3 batches over 2 years before I bit the bullet and put together a kegging system.

In the 9 months since beginning kegging, I have brewed 15 batches. There are all sorts of reasons that you should switch to kegging, but flat out, there is nothing better than opening a tap and pouring your buddies a beer that you made.

Deciding to DIY

I thought about my kegorator for quite a while before I started putting together the pieces. Personally, I prefer the look of a tower over the designs that have faucets through a collar; however the price tag of pre-made towers is outrageous.

I decided that my best bet would be to make my own tower. Anytime a project brought me to a hardware store, I walked the isles, brainstorming on how I could get various products to work. Finally, I purchased a stick of 3" PVC. I cut off two short pieces and made a mitered corner, and glued them together with PVC cement. The joint held. Really well. I twisted and pulled and pried, and the joint held. I was going to turn that 6 dollar stick of PVC into my beer pouring masterpiece.

Making the Tower

On to the construction. I needed to be able to access the shanks, so I cut out an access door in a length of PVC using a jig saw.

I cut both of the risers and one side of the cross piece at a 45 degree angle. The other side of the cross piece was left at a 90 degree angle at this point. While still in three pieces, I lined each with insulation. I used a cheap yoga mat. It's the blue stuff that you'll see in various pictures. Once it was lined, I glued the first riser to the cross piece.

After the joint dried, I mitered the opposite side, making sure that it was square with the opposite riser.

When the second joint dried, I drilled the holes for the shanks using a 7/8" spade bit. The holes were 4" on center.

On to the fun of sanding. I probably spent an hour with a sanding sponge cleaning up the corners, removing excess PVC cement, and smoothing out the exterior of the PVC.

I used one coat of primer, and two coats of black appliance paint, the same paint that I would be using on the chest freezer.

Stainless steel hinges and latches were added to the access door, and the stainless shanks were installed on the tower.

The tower then sat, awaiting final assembly.

Customizing the Refrigerator

The heart of my kegorator is the Whirlpool 8.9cf chest freezer from Lowes. This specific freezer is deeper than other models, allowing kegs to fit without staggering. I can fit 5-five gallon ball lock kegs on the floor of the freezer. It also leaves room for bottles on the compressor hump, as well as stacked in the voids between the kegs.

In its final home, after my basement gets finished, the kegorator will likely be against a wall. This will pose a problem when I need to open the lid: I don't want my spiffy tower banging against the wall. A cart was in order.

The outside skirt is a 2x6 with mitered corners. The inner support frame was constructed with 2x4"s and half lap joints. Each joint in the 2x4 support frame occurs where a “leg� of the chest freezer is, and a caster is directly below to stabilize the entire assembly.

The 2x4"s are spaced down an inch from the top edge of the 2x6, this will allow a tighter transition between the chest freezer and the cart. All four casters swivel; the back two are locking as well, incase this thing ever gets hauled to a party with sloped ground. The screws attaching the skirt to the 2x4"s were countersunk, then filled with wood putty. The cart was given a coat of primer and then cheap black paint.

While I was removing the hinges from the freezer for painting, I found that there were holes in the outer skin of the freezer hiding under the hinges. These were likely used to fill the cavity with expanding foam insulation. VERY carefully digging out the foam in this area, I was able to locate a spot where I could safely drill through the freezer to run the probe for my Love temperature controller through. I refilled the hole with the little bits of insulation. The temp controller housing hangs from a piece of scrap sheet metal that was sandwiched between the freezer and a hinge.

After taping things off, the freezer got a couple coats of black appliance paint.

Putting Tower to Fridge


I located where on the lid I wanted the tower to go, and outlined each of the risers on the lid. I found the center of each and proceeded to drill through the lid with a 3.5" hole saw, which is the outer diameter of 3" PVC.

The tower would be supported by toilet flanges that fit inside of the PVC risers. Using ½� aluminum u-channel, I created a frame to support these flanges from the bottom of the lid. I removed insulation where each channel was located, allowing the frame and remaining insulation to be a uniform surface.

I also attached a length of aluminum plate to the frame that I would be attaching the CO2 manifold to.

On the tower side that won't have beer lines running through it, I added a muffin fan. This is plugged into the second switched outlet that is operated by the Love controller; the fan cycles with the freezer and pushes cold air through the tower.

This photo also shows the one of the toilet flanges screwed to the aluminum frame.

I also installed a through-wall coupling in the lid that will allow me to easily disconnect the CO2 from the freezer at anytime.

With an all black kegorator, the white gasket between the lid and the body of the freezer was not acceptable. I used a black spray-on rubber coating on the gasket. The product I found is called Plasti Dip, and it is normally found by the spray paint in hardware stores. It worked pretty well, the gasket is still as flexible as it ever was, and coating seems to be adhering to the gasket well. I did touch up a few uncoated spots with a sharpie.

All of my gas connections use push-connect, or instant tube, fittings. These are super easy to use. To connect, just push the tubing into the fitting. To disconnect, push in on a release ring on the fitting, and pull the tubing out. It doesn't get any easier than that. I looked around for a pre-made manifold that could be adapted, but didn't have any luck. I ended up piecing one together. My manifold accommodates 5 kegs at the same pressure, each with a check valve to prevent backflow to the regulator or between the kegs.Manifold Parts List

With all the pieces of the lid ready, the plastic liner and gasket were re-attached and the CO2 manifold was screwed into the plate mounted on the aluminum framework. The tower slides through the freezer sheet metal and onto the flanges. With the help of the aluminum frame and the flanges, the tower is very sturdy, yet can easily be removed from the freezer should transportation require it.

Beer lines were routed through the tower and attached to the shanks using oeteker clamps. Due to lack of space inside the tower, I couldn't crimp the first beer line. The beer line was routed through the shank hole, crimped, and the shank replaced. The others were easily done in place.

To protect the floor of the freezer from kegs and bottles, I cut up two door mats that I found at a big box hardware store.

These are very similar to the anti-fatigue mats, but I liked the price a lot more ($6 instead of $30).

Up to this point, I had taken great lengths to make sure that each part of the kegorator could be easily disassembled. Barbs are not easily removed. At each liquid disconnect, in lue of the normally used barb-to-flare adapter, I utilized a short length of 1/4 inch stainless tubing. Note, stainless is not easily flared; the flaring set I use for copper plumbing wasn't up to the task. I ended up giving the pieces to an aviation mechanic buddy, who used a hydraulic flaring tool at work.

Finally, the nickel plated floor plates were snapped into place at the base of the tower, and the drip tray was centered. The drip tray has a layer of the rubber shelf liner glued to its bottom, which prevents scuffing the top, yet keeps it in place when opening the lid. Again, this allows for easy removal for cleaning.

The Bottom Line

All that is left is to hook up the co2 and draw a pint!

Full Parts List and Cost

Wow, I hope my wife doesn't see that sum. Note that with the exception of the CO2 tank, everything was purchased new. A large amount can be saved if you are patient and scour ebay and/or craigslist.

Eric lives in Omaha, Nebraska with his wife and little dog too. When not surfing the web dreaming of conical fermentors and fermentation chillers, he can be found on the Brewing Network or Northern Brewer forums as yellowcolumbia. If selected as Miss America, he would end hunger and create world peace, starting in The Iraq.
MyloFiore on 09/14/08 02:42 pm writes
Nice work, brotha. Look schweet! a handy addition to the RAT PAD!
Jaws on 09/18/08 09:43 pm writes
Nice job.... never thought of using pvc cement to construct the tower. Make sense though. Great job.
Cheers,
Jason
Vlan on 11/01/08 10:01 am writes
I was going to build something sort of like this, out of wood or pvc, wasnt sure. However, a buddy of mine who did scrap one day I was talking to him about building it and the best materials, and he told me wait a sec and went into a bus full of garbage and brought out a single and a double tap tower with everything in it. I have to say even though I have commercial stuff, yours is nicer looking. Did you consider putting a wood top on the kegerator? Great work though. Do you think the homebrewing will slow down eventually for you? What kind of eq do you use?

Vlan
Vlan on 11/01/08 10:02 am writes
PS: If you want a conical, they are 250 for a stainless steel one on ebay. If you want, email me and Ill give you his name, he only puts one per month up or so.
Love it on 04/15/09 09:29 am writes
Now that you 've had this functioning for a half a year, are there any improvements necessary, or anything you would have done differently?
Russ on 04/22/09 02:15 am writes
Dude! This rocks! I hope you replaced the standard tap handles with some schnazzy ones! Cheers!
Elite One on 05/22/09 05:41 am writes
You did an excellent job on this. I own a machine shop and everything we do is precise like your kegerator! My question is what temp can that freezer get up to and can it go outside in a NJ summer climate? Any help would be greatly appreciated. elite_tool@netzero.com
Eric on 06/05/09 07:09 am writes
I've got a change planned, and as it is completed, I'll see if I can get Push to update the write-up. I'm adding a top that matches our bar countertops and will provide a recess for the drip tray. Also a fresh coat of paint, thanks to scratches from the basement finishing process.

Still have the same tap handles. I was going to build custom handles with interchangeable inserts for different beers, but have decided against it. I like the look of the black handle, and am going to get a chalkboard or something to indicate what's on tap where.

The temp is controlled by the Love controller, so it will go from sub freezing to whatever the ambient temp is, and higher if you added a heating device. The whole set-up would work fine outside, but in the heat the freezer will cycle more often.
Push Eject on 06/05/09 07:40 am writes
@Eric Of course we'll do the update! Looking forward to it.
Goeyzvds on 07/09/09 06:42 pm writes
Wonderfull great site
Roger on 07/13/09 03:27 pm writes
Great stuff! We are interested in learning more about length/gauge of hoses, and how that relates to carbonation levels. I understand that without separate regulators on each of the kegs, you are hard-wired to having the same carbonation levels. However, it is my understanding that different length tubing from keg-to-tap will yield different carbo levels. Is there any formula we could follow? We are trying to optimize before using our beer gun to do some bottling.
Gava on 08/26/09 09:23 pm writes
Roger..
To find how you balance your keg system search for "Balanced Draft System" there is a formula to show you the correct beer line lenght etc..

It depends on the height of your taps to the middle point of your kegs, the temp of the kegs and the serving presure..

In my system I have 3m of good quality beer line with a serving preasure of 74-80KPA @ 4c this gives me 2.4 carb level with 0KPA at the tap end. This results in clean and easy pouring everytime..

I also have one tap which has a lever that you can change the flow so you dont NEED a 3m beer line you can just adjust as you wish.. I like this option but would rather a nice balance system.

Taking the time to balance your system helps.. I had cup-o-foam the first time I just "slapped" my system together... but now even the drunkest of person can pour a beer.
Gaz on 12/07/09 01:56 pm writes
Dear Sir,

Please move to the SF Bay Area and build me one of these. Now.

Regards,
Dumb as a Rock
Push Eject on 12/07/09 02:03 pm writes
Gaz, LOL!!!
Gaz on 12/07/09 03:30 pm writes
Okay, I can *probably* do this myself. Probably. Especially given the handy dandy parts list included (which, now that I mention it, doesn't contain anything about the love controller/temperature doodad?)
Eric on 12/21/09 12:27 pm writes
I could be bribed...

I guess I should have included the controller bit in the write-up.
The love controller came from cole-parmer. - While not the exact one I used, part number EW-93520-12 will do the trick at $50 plus shipping. The controller got mounted in a project box from radioshack ($10?). Run a power cord to the project box, then use the love controller to switch a duplex outlet. The freezer gets plugged into one of these outlets. The second was used to control the tower fan.
I can help with a wiring diagram for a controller, once a specific model is picked out (each model may vary a bit). Or one could use a prewired product, such as a ranco.
Push Eject on 12/21/09 01:42 pm writes
Here is the LoveTS series manual: Love TS Manual
Gaz, the Überest of Micks on 02/03/10 11:05 am writes
Aha, that makes fantastic sense, Eric. I'm assuming (a horrible word when it comes to me, since, as mentioned, I'm dumb as a rock) a PID would do the trick as well, and MIGHT even be a better option, since it'd "learn" how to swing temperature correctly?

I'm going to attempt this in a couple of months. At the moment I'm in the process of building a Brutus 10 clone, which is sucking up the majority of my time and resources, but the idea of bottling 10 gallons of beer frankly terrifies me, and leaves me slightly dirtying my underpants. (Horrible sight, I apologize) Given the fact that I'm currently welding stainless steel for the stand, I'm having delusions of grandeur in making this thing out of stainless pipe, and am going to need to sheath the thing in some sort of wood to make it look purty for the wife. (Who, like yours, will beat the everloving tar out of me, should she see the cost...)

Did you ever make that matching countertop step?

Sincerely drunk,
Dumb as a Rock
Eric on 02/05/10 08:19 am writes
Gaz-
Yes, a pid will do the trick as well, but you probably want to find one that has a relay output. The love is capable of switching up to 16 amps directly; many PIDs require an external relay or SSR to actually do the switching, which will add to the cost. As far as a pid learning the temp swings, it might be able to stop the compressor early to prevent overshooting the cooling temp, but with the compressor being on/off only (and not liking being cycled), the PID can't vary the output to slow down the cooling as the setpoint is being reached. My Love might overshoot a degree; if I cared, I could just adjust the setpoint up a degree. Bottom line, get whichever tickles your fancy, they will all do the trick.

The matching countertop has been cancelled. Wife prefers the all black, which is less work for me, so win-win. I did scrape off all of the appliance paint from the freezer, which was coming off way too easily. I roughened up the original finish a bit with a sanding sponge, used a rustoleum primer, and top coated with a rustoleum gloss black. Much more durable surface than the rattle can appliance paint provided. I also ditched the drip tray and just use brewery logo cotton bar mats. They're too easy clean- just throw in the wash with a load of towels.

Gaz, still mentally unstable on 02/19/10 10:05 am writes
Eric, you're a fountain of knowledge man, and when I get this thing built, the first pint will be in honour of you. I might even call the thing the Ericerator. (Okay, maybe not...)

But the parts for this are slowly coming in, and the only thing left to order are the freezer itself, the shanks, and... whatever I'm using for the tower. I checked out the replacement Lowes is carrying for that freezer (Frigidaire 8.8cf) and it doesn't look nearly as spacious as your Whirlpool - oddly enough. So a collar will need to be added as well... ugh.
Gaz, hang on a sec... on 02/19/10 10:08 am writes
Oh, by the way, just for s**ts and giggles, I got a quote from ACU metal fabricating on getting your exact tower made from stainless. $387!!!
Push Eject on 02/19/10 10:57 am writes
HOLY COW, Gaz! That's unreal.
Gaz on 02/19/10 02:31 pm writes
PE - yeah, no kidding, f that noise! I'm either going to take a crack at making it myself, or I'll just follow Eric's lead and make it from PVC, just use silver metallic paint instead! (Oooh, maybe I can get it chromed!!)
WC on 05/10/10 07:45 am writes
Hey, I came across this article and am intrigued by how you handled the white gasket - painting it with Plasti Dip. I'm finishing up my conversion of a white chest freezer to black keezer and need to do something with that white gasket. How is your gasket holding up?
Eric on 05/10/10 08:13 pm writes
The plasti-dip is holding up fine; it isnt peeling away from the gasket anywhere as far as I can tell. I'm certaintly happy with it.
Martin Andresen on 09/06/10 05:48 am writes
Hi Eric

Thanks a lot for a very good description of how you built the kegerator! I have actually been thinking of almost exactly the same solution myself, but have wondered what material to use. Obviously, PVC is the easiest, cheapest and best material. Is there any reason you didn´t use rounded corners? There are PVC 90 degree bends, I´m just imagining it would look even nicer.

I also have another question: What kind of shanks or parts did you use to attach the faucets to the PCV? I imagine using a regular shank would look a bit strange since the PVC is round.

Please advice - and thanks a lot fro the instructions!
Eric on 09/15/10 08:24 am writes
Martin,
Certainly the premade 90 degree bends would do the trick, I just prefer the look of the 90 degree mitered corner.
I used elbow shanks, those made for round towers. They fit the 3" PVC almost perfectly. Mine were stainless from micromatic.com, part number 4329AS-3E. Other materials and finishes are available through them.

play solitaire,
I checked all the links, and they appear to be working. Let me know if there is something specific you are looking for.
andgeiil on 09/24/11 08:27 am writes
how many time i do not do what i want to do but do what i dont want to do

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