5L Bag-in-Keg

The 5L Bag-in-Keg (5L one-way PET keg with inner liner) is a single-use explosion-proof keg built around an inner bag compression dispensing system. A sterile aluminium foil inner bag is contained within the double-layer PET barrel structure. During dispense, CO2 or compressed air enters the space between the PET container and the inner bag through the keg coupler, squeezing the bag to push beer out without the gas ever contacting the beer. This keeps beer oxygen-free and fresh throughout the keg’s life.

At 5 litres, this is the most portable keg with bag format, making it well suited to gifting, retail off-trade, home dispense, tasting experiences, and small hospitality settings such as hotel rooms or private dining. No food-grade CO2, cylinders, or pressure regulators are required, making this format genuinely accessible to end consumers and venues without any specialist gas infrastructure. The keg is compatible with standard keg couplers across types A, D, S, M, F, U, G, and T, and includes an automatic pressure relief valve for transport and dispense safety.