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Why Dolium

Two questions decide a keg purchase: when a one-way keg pays off, and why it should be a Dolium. This page answers both.

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When does
a one-way keg pay off?

It comes down to rotation. The lower a keg rotates, the more a one-way keg makes sense. On high-rotation routes close to home, stainless steel stays the better choice. Dolium is complementary to stainless steel kegs, not a replacement.

Export and long distance
Reduce the cost of reaching markets where return logistics take a long time, and lower the risk of loss.
Peak shaving
Cover the summer peak and avoid investing in sleeping kegs during the winter season.
New to draught
Start on draught with no stainless steel keg fleet, no cleaning and no risk of loss.
Market tests
Test a market with small volumes and scale up fast once it responds.
New channels
Reach channels and accounts where return logistics do not work.
Pallets of one-way kegs loaded into a shipping container
Chart of the utilization rate of a stainless steel keg portfolio over twelve months, peaking in summer
Barista pouring iced cold brew coffee from a draught tap
A Dolium one-way keg on a city map next to a red location pin
Festival bar serving draught beer and cider

Why choose Dolium

Once a one-way keg makes sense, here is what you get with Dolium.

Beverage integrity

Advanced barrier technology preserves product quality and freshness.

  • Active oxygen barrier technology
  • Passive CO2 retention (less than 5% loss after 6 months)
  • UV protection included
  • Food-grade certified materials
  • Patented APRV (Automatic Pressure Relief Valve): opens at 5 bar, re-closes at 2 bar

Universal compatibility

Works with all existing filling and dispensing equipment.

  • Compatible with all standard spears (A, G, S, D)
  • No special filling heads required
  • Works with existing tap systems
  • Fills at the same speed as stainless steel

Cost effective

Eliminate upfront keg investment and reduce operational cost.

  • No initial capital investment required
  • Reduce labour cost for cleaning and maintenance
  • Lower insurance cost, no keg loss risk
  • Predictable cost per unit
  • No sleeping stainless steel park

Sustainable

PPWR Class A recyclable, with minimal environmental impact.

  • 100% recyclable material, made with recycled content
  • No cleaning chemicals required
  • Reduced water consumption
  • Lower carbon footprint, validated by LCA (ISO 14040/44)

Time saving

Ready-to-use kegs remove preparation and cleaning time.

  • No washing or sanitising required
  • Available prefilled with nitrogen or CO2
  • Instant deployment, reduced operational complexity

Logistics simplified

No return logistics, recycle responsibly after use.

  • Stackable, optimised for palletisation
  • Lightweight, more beverage instead of stainless steel
  • No keg tracking systems needed

Is Dolium right for you?

A quick rule: high rotation close to home favours stainless steel, low rotation or export favours Dolium.

Dolium one-way keg

1 to 3

turns per year

  • Export and long-distance routes where return is slow or impossible
  • Seasonal peaks, market tests and new channels
  • Accounts where deposits, cleaning or tracking do not work

The lower the rotation, the more a one-way keg pays off.

Stainless steel keg

4 to 10

turns per year or more

  • Local or regional routes where kegs come back quickly
  • A stable, predictable base volume year-round
  • Return logistics you already run efficiently

Stainless steel earns back its cost on high rotation.

Between 3 and 5 turns a year? That band depends on distance, season and storage cost. Tell us your routes and we run the numbers with you.

Ask us to run the numbers

Dolium vs a stainless steel keg

On low-rotation and export routes, the advantage is clear.

  • Criterion

  • Dolium keg

  • Stainless steel keg
  • Initial investment
  • Dolium needs no capital investment, you buy what you need.
  • Stainless steel needs capital investment.
  • Cleaning
  • Dolium comes ready to fill, no cleaning at all.
  • A stainless steel keg must be washed and sanitised every cycle, using water, chemicals and energy.
  • Return logistics
  • Dolium ships one way and is recycled locally.
  • A stainless steel keg has to be collected and shipped back empty.
  • Deposit and tracking
  • Dolium needs neither.
  • Stainless steel needs deposits and tracking systems.
  • Storage
  • Dolium removes the sleeping stainless steel keg park.
  • Stainless steel sits idle between cycles and takes warehouse space.
  • Weight
  • Dolium is lighter, so you transport more beverage and less package per load.
  • A stainless steel keg weighs 9 kg empty on average.
  • Risk of loss
  • With Dolium there is no keg to lose.
  • A stainless steel keg lost abroad is an expensive write-off.
  • Recyclability
  • Dolium is class A recyclable (PPWR) through standard recycling streams.
  • A stainless steel keg is reused, which only pays off on high rotation.
  • Compatibility
  • Adopting Dolium needs no re-tooling.
  • Both use standard A, G, S and D spears.
  • Total cost of ownership
  • Dolium removes those entirely.
  • A stainless steel keg carries costs long after the purchase: cleaning (water, chemicals, energy), maintenance, tracking, insurance and reverse logistics. On low-rotation and export routes, that typically means a 30 to 50 percent lower total cost than stainless steel.
    • See the full comparison

    Dolium vs other one-way kegs

    What changes if you already use a one-way keg: APRV, no internal bag, all four spear types.

    The only patented APRV

    Opens at 5 bar and re-closes at 2 bar, the highest safety level in the category. Kegs without a re-closable valve cannot match it.

    No bag,
    no second failure point

    Many one-way kegs are bag-in-keg. Dolium is single-wall with no internal bag, so there is one less variable in filling and one less risk in the field.

    Keg coupler

    Standard filling and dispense

    Every standard spear: A, G, S and D, on professional dispense equipment. Manual, semi or fully automatic filling, without re-tooling.

    Compare with other one-way kegs

    Technology

    The APRV, barrier technology and CO2 retention that back the claims.

    0 months

    Barrier protection

    < 0 %

    CO₂ loss after 6 months

    0 bar

    APRV opens at 5 bar and re-closes at 2 bar

    See the technology

    Proven, not just claimed

    Dolium kegs are audited and certified by leading global beverage companies under extreme conditions of temperature, pressure and handling.

    Building one-way
    kegs since 2013

    One product, one focus: the most advanced one-way keg, made in Belgium.

    Present in
    50+ countries

    Distribution partners in all key markets, with local support and delivery.

    Validated by LCA,
    ISO 14040/44

    The environmental claims are backed by an independent life cycle analysis.

    Not sure where your routes fit?

    Tell us your markets and volumes. We help you see where Dolium pays off, and where it does not.

    Ask a quote
    Talk to our team