HOWTO Build A Kegbot
From KegbotWiki
This will eventually be a complete guide on how to build a kegbot. (Right now it is more of an outline.)
Basic steps:
- Find Parts
- Build a kegerator
- Add flowmeter
- Add Kegboard
- Connect to Kegbot Software
- Drink!
Contents |
Finding parts
Flow Meter: SwissFlow 800 Source: Warrens Industrial Park Store on Ebay (Spam filter won't allow direct link) $24.95 + S/H
Solenoid Valve: [McMaster-Carr] Part# 7876k25 for a 12vdc 3/8" Normaly closed. $41.24 + S/H
Kegerator Kit: should include a C02 tank, regulator, 2 sets of tubing (1 for beer, 1 for C02), Type-D (Standard American) Beer Tap, and a spout of some sort. There are too many sources. Just google and go for the kind of kit you like.
Deciding on Features
Before you begin building your kegbot, you should have an idea of what you want your kegbot to be and what you want it to use it for. Not all parts and equipment are required, depending on these decisions.
Valve Control
Do you want to be able to shut off beer lines according to access control policies? A solenoid valve and code to open and close it according to different rules is part of the original kegbot design; however, a valve does add expense (at least $30 per beer line) and complexity to the system.
In addition, valves are believed to contribute to foaming problems.
Thermostat Control
Will you be using a refridgerator, or converting a freezer to act as one? The original kegbot had a relay and sensor to modulate a freezer's power to keep it around fridge temperatures.
There are off-the-shelf products to do the same thing, but they typically lack ability to make adjustments via the computer. Adding freezer control also means you will need a high-voltage relay to control the freezer. It also makes your controller software and operation critical to the health of the keg, as a mistake here could cause your expensive beer to freeze or warm.
Thermostat control is not advised for new designs.
Build the Kegerator
You must first start with a refrigerator or freezer. If you use a freezer you will also have to control the temperature with the kegbot or an external controller (~$50). Essentially all you must do is cut a hole in the kegerator and mount the spout. It is important to check that no coolant lines are present where you want to put the spout.
Add the Flow Hardware
The solenoid is 3/8" female to female and the flow meter is 3/8" male to male. You will need one 3/8" FNTP to 1/4" barb adapter (here) and one 3/8" NTP to 1/4" barb adapter (here). You should cut into your beer line near the connection to the tap and insert the hardware with the push in fittings attached.
