A tank beer system is a way of storing and serving beer in bulk instead of using traditional kegs. The beer is delivered directly from the brewery to a hospitality venue and transferred into specially designed beer tanks. From these tanks, the beer is supplied directly to the bar and beer taps.

Tank beer systems are particularly suitable for bars, restaurants, stadiums, event venues and other locations with a high beer volume. By replacing multiple individual kegs with one larger beer tank, the system simplifies beer handling, reduces packaging and provides an efficient way to store and serve large volumes of beer.

A modern Duotank tank beer system consists of one or more beer tanks, typically with capacities of 250, 500 or 1,000 litres. Inside each tank is a flexible, airtight beer inliner in which the beer is stored.

The beer itself does not come into contact with the tank wall. Instead, it remains completely enclosed inside the inliner. Compressed air is introduced into the space between the stainless-steel tank and the inliner. The air gently compresses the inliner and pushes the beer through the beer line towards the tap.

Because the compressed air never comes into direct contact with the beer, no additional CO₂ is required to push the beer from the tank to the tap. The beer remains separated from outside air throughout the process, helping to preserve the quality and characteristics intended by the brewery.

When the tank is empty, the used inliner is removed and replaced with a new one, preparing the tank for the next delivery.

Our tank beer systems deliver substantial operational benefits. The replaceable inliner system eliminates the need for chemical cleaning between batches, improving hygiene while reducing labor costs. Our systems also minimize waste through precise dispensing, ensure consistent quality control through digital monitoring, and significantly reduce your carbon footprint by eliminating empty keg returns and reducing packaging waste.

Duotank's Bag-in-Tank technology creates a sealed environment that minimizes beer exposure to external elements like oxygen and light. This innovative system maintains optimal temperature and pressure conditions, preserving the beer's flavor profile and extending freshness for up to 12 weeks—significantly longer than traditional kegs, bottles, or cans.

We offer both horizontal and vertical tank configurations to accommodate different spatial requirements and installation environments. Horizontal tanks are ideal for venues with height restrictions, while vertical tanks maximize floor space efficiency. Each system can be customized with various external finishes and fittings to match your venue's aesthetic and functional requirements.

Our insulated tank beer installations feature premium thermal insulation that maintains optimal serving temperature with minimal energy consumption. The systems use compressed air for dispensing instead of CO2, reducing your environmental impact while ensuring perfect pour quality. Each installation is designed to maximize energy efficiency based on your specific venue conditions and requirements.

Yes! Duotank provides flexible systems for lagering, storage, transport, and distribution from brewery to pub or bottling plant. Our modular solutions range from 5 HL to 120 HL, so Duotank grows with your Tankbeer operation.

Instead of filling individual kegs, the brewery can fill a tank beer transport tank. The beer is then transported in bulk to the hospitality venue.

At the point of delivery, the beer is transferred from the transport tank into the inliner of the venue's beer tank using a dedicated tank beer delivery system. The quantity delivered can be accurately measured during this process.

This creates an efficient bulk beer supply chain:

Brewery → Transport Tank → Delivery System → Beer Tank → Beer Tap

Depending on the distribution model, tank beer can be transported using dedicated tank beer trucks or combined with other beverage deliveries.