3L Bag-in-Keg

The 3L Bag-in-Keg (3L 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 3 litres, this is the smallest and most portable format in the range, making it particularly well suited to premium gifting, retail off-trade, direct-to-consumer sales, sampling programmes, and single-serve hospitality applications. The absence of any food-grade CO2, cylinder, or regulator requirement makes the 3L keg with bag accessible to consumers and venues with no gas infrastructure whatsoever. The compact size and lightweight empty weight make it cost-effective to ship direct to consumers and easy to display in retail environments.

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 built into the closure to ensure safety during transport and at the point of dispense.