Do you know that in the realm of brewing & beverage dispensing, understanding the components that make equipment crucial for maintaining quality as well as efficiency are draft keys & lugs?

But, people do have less knowledge about the same, so for that, we are here with this blog. Here, through this guide, you will delve into what they are, their functions, and their significance in the beverage dispensing process which will make them get in touch with draft key and lugs manufacturers and suppliers to have the same for themselves.

What are Draft Keys?

These keys, which are often referred to as keg couplers, are utilized in equipment that taps kegs to release the liquid within. They can facilitate the flow of beer from the keg to the tap by serving as a link between the keg and the beer system. Draft keys come in a variety of forms, each intended for a certain kind of keg. The common types include:

  • D System (American Sankey): This is widely used in couplers which are compatible with the majority of American beers.
  • S System (European Sankey): This coupler is used for many European beers.
  • A System (German Slider): It’s the one unique design that slides onto the keg.
  • G System (Grundy): This one is the special thing that is used for some European beers
  • U System: This is the one that is used for certain Irish beers.

Functions of Draft Keys

Well, there are many different functions that everyone needs to know so let’s know about that:

  • To experience the regulating flow: These draft keys help in controlling the flow of beer from the keg to the tap. Other than this, the proper regulation is completely essential to maintain the quality of everything which will result in ensuring it is not over-carbonated or flat.
  • To have ease of use: Another important function that everyone should know is that the keys are designed in such a way as easy attachment and detachment, making it simple to switch kegs when necessary. This is particularly useful in bars and restaurants with high beer turnover.
  • To maintain freshness: By providing a sealed connection, everyone would be able to have this function that they would be able to keep the beer fresh. This is particularly important for preserving the taste and quality of the beer.
  • Facilitates the keg’s connection to the dispensing system: The other function of a draft key is to connect to the keg of the draft system. This connection will allow the pressurized gas to enter the keg & push that out.

Types of Draft Keys and Lugs

  • Draft Keys: Available in various shapes and sizes, including rectangular, square, and tapered designs to accommodate different applications.
  • Lugs: Come in multiple configurations, such as straight, angled, and flanged, to suit diverse mounting requirements.
  • Materials: Commonly made from steel, stainless steel, or aluminum, chosen based on the operating environment and load requirements.

What are Lugs?

These are the little protuberances, also called tabs, on the necks of draft keys and kegs. In addition, the lugs are essential for locking the keg’s connection to the draft system. When a draft key is spun, it locks into place because the lugs on a keg line up with the slots on the key.

Now, as you have understood what these are so let’s have a look at the fact that which kind of functions this process has for you. For that, just look below:

  • Helps in Securing the Coupler: The primary function of lugs is to ensure that the draft key is securely attached to the keg. Not only this, when the coupler is twisted into place, the lugs lock into the slots which results in creating a tight seal.
  • Prevent the Leaks: Everyone knows that every secure connection is vital to prevent leaks. So, they should take the help of lugs as these will help in preventing waste & potential safety hazards.
  • Ensures Compatibility: Different types of kegs have different lug configurations. This ensures that only the correct type of draft key can be used with a specific keg, preventing damage and ensuring proper operation.

Selecting the Right Draft Keys and Lugs

  • Application: Consider the specific requirements of the equipment, including the load, speed, and environmental conditions.
  • Size and Strength: Choose the appropriate size and strength to ensure a secure and reliable connection.
  • Compatibility: Ensure the draft keys and lugs are compatible with the mating components and can be easily installed.
  • Corrosion Resistance: Select materials that can withstand the operating environment and prevent premature wear or failure.

Installation and Maintenance of Draft Keys and Lugs

  • Preparation: Ensure the mating surfaces are clean and free of any debris or obstructions.
  • Alignment: Carefully align the draft keys and lugs to the designated positions, following the manufacturer’s instructions.
  • Securing: Tighten the fasteners to the recommended torque values, ensuring a secure and reliable connection.


The above information is a bit about draft keys & lugs that are essential components of any draft beer system. So, if you want more details, then you can get in touch with our professionals now as they will help you in all possible ways.

INDGIRKA has been the best Draft Key and Lugs Manufacturer and supplier since 2018. Our competent support staff and ability to meet tight delivery deadlines have assisted us in building a large customer base and attracting new cutting-edge businesses in India.