What is the best way to clean beer lines?

Answered by Robert Golston

As an expert sommelier and brewer, I have had plenty of experience in cleaning lines to maintain the quality and taste of the beer. Cleaning the beer lines is essential to remove any build-up of residue, bacteria, and that can affect the flavor of the beer. There are several methods and products available, but I will focus on the best way to clean beer lines.

One of the commonly used and effective methods for beer line cleaning is the use of caustic chemicals. Sodium hydroxide (NaOH) and potassium hydroxide (KOH) are two caustic chemicals that are often employed in beer line cleaning solutions. These chemicals have strong alkaline properties and are highly effective in removing organic matter and stubborn deposits from the beer lines.

When using caustic chemicals, it is crucial to follow proper safety procedures. Always wear appropriate protective gear such as gloves and goggles to avoid any contact with the chemicals. Additionally, ensure proper ventilation in the area where the cleaning is taking place to avoid inhaling any fumes.

To clean the beer lines using caustic chemicals, you can follow these steps:

1. Prepare the cleaning solution: Mix the appropriate amount of caustic chemical (NaOH or KOH) with warm according to the manufacturer's instructions. The concentration may vary depending on the specific product, so it is important to read and follow the instructions carefully.

2. Disconnect the beer lines: Remove the beer lines from the keg or tap system. This can usually be done by unscrewing or disconnecting the fittings.

3. Soak the beer lines: Place the beer lines in a container or a dedicated cleaning keg that can accommodate the length of the lines. Make sure the lines are fully submerged in the cleaning solution.

4. Let it soak: Allow the beer lines to soak in the cleaning solution for the recommended amount of time, usually around 15-30 minutes. This will allow the caustic chemical to break down any residue and bacteria present in the lines.

5. Rinse thoroughly: After the soaking period, thoroughly rinse the beer lines with clean water to remove any traces of the caustic chemical. Make sure to rinse until the water runs clear, indicating that all the cleaning solution has been flushed out.

6. Sanitize the beer lines: After cleaning, it is essential to sanitize the beer lines to ensure the removal of any remaining bacteria or microorganisms. Use a suitable sanitizer recommended for beer line cleaning and follow the manufacturer's instructions for dilution and contact time.

7. Reconnect and test: Once the beer lines are cleaned and sanitized, reconnect them to the keg or tap system. Run a small amount of beer through the lines and taste it to ensure there are no off-flavors or residues present.

It is worth noting that caustic chemicals should be handled with care and used according to the instructions provided. Overuse or improper handling of these chemicals can potentially damage the beer lines or other equipment. Therefore, it is crucial to follow the recommended guidelines and consult with professionals if needed.

In addition to caustic chemical cleaning, there are alternative methods available, such as using enzymatic cleaners or line cleaning kits. These options may be preferred by some brewers due to their milder nature or ease of use. However, it is important to research and choose products that are specifically designed for beer line cleaning to ensure effective results.

Ultimately, the best way to clean beer lines will depend on individual preferences, available resources, and the specific requirements of the setup. Regular cleaning and maintenance of beer lines are essential to ensure the quality and taste of the beer, so finding a cleaning method that suits your needs is crucial.