Keg Carbonation Lid

  • Item #B40
  • Price: $34.99
  • Part #
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In stock, will ship on Saturday, September 25

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The Keg Carbonation Lid features a .5 micron stainless airstone attached to the bottom of a standard oval keg lid with 22" of tubing. A gas ball lock fitting on the lid means you can inject C02 into your kegged beer from the bottom, and have it permeate up through the beer in fine bubbles for rapid carbonation (3-6 hours if the beer is 40° F. or less and gas pressure is 20 PSI). Fits all oval lid kegs and includes a lid sealing O ring and relief valve.

To use, install on your keg of beer and chill to 40° F or less. When cold, attach your ball lock gas line to the ball lock post on the lid, and set your dispensing pressure for 25 PSI. Leave for 6 hours and then remove the gas line. Attach your gas line to the IN side of your keg, (removing it from the lid) and release the head pressure in the keg so it is around 6 to 8 PSI. Then turn on your gas to 6-8 PSI to dispense, and your beer will be carbonated.

Average rating 9.16666666666666 out of 10 ( based on 12 reviews )

Love this Lid!

Review by Leslie on 3/18/2017

This is perfect for gentle controlled carbonation in about 6-12 hours! Very easy to use and is a great fitting lid. Would recommend this to anyone who uses kegs!

Works great

Review by Russ on 3/26/2017

This lid works as advertised, and I plan to order another one in the future so that I can carbonate two at once. I do have one recommendation that kept it from a 5 rating. There needs to be a check valve, either at the ball-lock connector or in-line with the stone. If you happen to run out of gas during the carbonation process, the pressure will push beer up into the CO2 lines. It would be a nice addition to have an in-line check valve attached to the line. US Plastics has a couple of options for ~$2 that I plan to add to mine.

Great Product

Review by Morrey Thomas on 8/8/2017

Nicely made product with quality parts and workmanship showing attention to detail. I find CO2 psi needs to start off a bit slowly when the beer is cold at 35F or so. I started at 5 psi for a couple of hours, then ramped up to 10 psi for a couple more hours, then finished it off at 20 psi for a total of 6 hours with the carb stone. Removed keg carb lid, replaced standard lid and let rest on normal serving pressures for a day to settle off. This is a super quick method, but be careful not to overcarb as I did twice before learning to control to gas better.

Keg Carbonation Lid

Review by Chris on 10/6/2017

This carbonates beer very quickly. After buying one I bought another for my second keg.


Review by Mark Bancroft on 12/11/2017

Great product. Works great to carbonate quickly and consistently. Put it on, dial up your pressure and next day it is ready to go. Perfectly carbed. I bought 2 so I man do more than 1 at a time. Definitely pricey but will last forever and worth it.

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Feb 13, 2021 by Todd R

Q: Is this made in the USA?

A: This is made in China. There are no keg lids made in the USA anymore, unfortunately.

Dec 02, 2020 by Jonathan

Q: What is the size of the tubing? I need a replacement for my current lid/stone combo (which works great by the way).

A: This currently comes with 5mm by 8mm EvaBarrier tubing, but if you need a replacement, we find our PVC tubing item S10 much easier to work with and put on.

Oct 28, 2020 by Luke

Q: Can you use this with beer gas to add nitrogen to beer?

A: Yes you can.

Sep 16, 2020 by Chad

Q: Is this just add fizzy as the continuous line one?

A: Yes, this adds fizz like the Reactor Lid, although it does not refill the keg.

Mar 05, 2018 by Paul

Q: Can I safely switch this lid with the standard corny lid without losing too much carbonation?

A: When you switch lids, you will lose pressure. This lid seals as well as any keg lid.

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