How to Change a Keg: A Comprehensive Guide


Changing a keg might seem like a daunting task, especially if you’re new to the world of beverages, but fear not. Whether you’re managing a bar, hosting a party, or just looking to maintain your home kegerator, this comprehensive guide will walk you through the step-by-step process of how to change a keg with ease.

Section 1: Gathering the Necessary Supplies

Before you embark on the keg-changing journey, make sure you have these essential supplies on hand:

  • A full keg: The new keg you’ll be replacing the empty one with.
  • A kegerator or keg cooler: The container that houses your keg.
  • A CO2 tank: Necessary for maintaining carbonation.
  • A wrench or keg coupler: For connecting and disconnecting the keg.
  • A bucket or drip tray: To catch any spillage.
  • Sanitizing solution: For cleaning equipment.
  • Safety gloves and eyewear: Protect yourself during the process.
Change a Keg

Section 2: Preparing for Keg Replacement

  1. Safety First: Put on your safety gloves and eyewear before you begin.
  2. Empty the Old Keg: Ensure that the old keg is empty. If not, finish or transfer its contents.
  3. Release Pressure: Slowly release any built-up pressure by turning the relief valve on the keg coupler. Be cautious, as there may still be some gas inside.

Section 3: Removing the Old Keg

  1. Unscrew the Nut: Using a wrench, gently unscrew the nut connecting the keg coupler to the old keg.
  2. Disconnect the Lines: Remove both the gas and beer lines from the keg coupler.
  3. Lift and Remove: Carefully lift the old keg from the kegerator or cooler and set it aside.

Section 4: Replacing with a New Keg

  1. Clean Lines: Take this opportunity to clean the beer and gas lines to maintain the quality of your beverage.
  2. Attach New Keg: Place the new keg in the kegerator or cooler. Attach the keg coupler by screwing on the nut.
  3. Connect Lines: Reattach the gas and beer lines to the keg coupler. Ensure they are secure and properly sealed.
  4. Pressurize: Turn on the CO2 tank and adjust the pressure to your desired level.

Section 5: Testing and Serving

  1. Test for Leaks: Spray a mixture of water and sanitizer on the connections to check for leaks. Bubbles will form if there’s a leak.
  2. Draw a Test Pint: Pour a small test pint to ensure everything is working correctly.
Change a Keg

Frequently Asked Questions (FAQs) – Changing a Keg

Is it necessary to wear safety gear while changing a keg?

Safety gear, including gloves and eyewear, is recommended to protect yourself during the process.

Can I change a keg if it’s not completely empty?

It’s best to change a keg when it’s empty, but if necessary, you can transfer its contents to another vessel.

How do I release pressure from the old keg?

Slowly turn the relief valve on the keg coupler to release any built-up pressure. Exercise caution, as there may still be gas inside.

What should I do if I encounter leaks during keg replacement?

If you detect leaks, check the connections and seals, and tighten them as needed. Ensure that all connections are secure.

How do I adjust the pressure on the CO2 tank?

Use the pressure adjustment valve on the CO2 tank to set the pressure to your desired level. Consult your keg’s specific requirements for guidance.

Can I reuse the beer and gas lines for multiple kegs?

Yes, you can reuse lines, but it’s important to clean and sanitize them between keg changes to maintain the quality of your beverages.

What if I’m not sure about the keg changing process?

If you have any doubts or encounter difficulties, it’s advisable to seek guidance from a professional or consult the keg manufacturer’s instructions.

Change a Keg


Congratulations! You’ve successfully changed a keg, a skill that will serve you well whether you’re running a bar, hosting a party, or simply enjoying draft beer at home. Remember, practice makes perfect, and with each keg change, you’ll become more proficient. So, cheers to you, the keg-changing pro, and your next perfectly poured pint!


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