If your Billi™ sparkling water system uses replacement cylinder 996911 or the 996912 two-pack, EcoVenza's 2.2L CO₂ cylinder is a compatible replacement.
Billi™ cylinders contain 1.1kg of CO₂, while the equivalent EcoVenza cylinder contains 1.3kg in the same 2.2L cylinder volume. That provides 200g, or approximately 18%, more CO₂ per cylinder, giving you more gas available for sparkling water between cylinder changes. Actual water yield varies with carbonation settings and system usage.
Billi™ 996911 And 996912 Cylinder Compatibility
Billi™ uses two product codes that customers commonly encounter when replacing their sparkling-water CO₂ cylinders.
996911 is the single-cylinder product. 996912 is a two-pack containing two of the same cylinders. They are not different cylinder formats.
The main differences between the Billi™ cylinder and EcoVenza's compatible replacement are straightforward:
| Specification | Billi™ | EcoVenza |
|---|---|---|
| Replacement reference | 996911 / 996912 | Compatible replacement |
| Cylinder volume | 2.2L | 2.2L |
| CO₂ per cylinder | 1.1kg | 1.3kg |
| Difference in CO₂ | - | 200g more |
| Connection | M10 | M10 |
EcoVenza's additional 200g represents approximately 18% more CO₂ by weight in the same cylinder volume. More available gas can provide more sparkling water per cylinder, although the actual litres produced will depend on the system and carbonation level.
This compatibility relationship is the key reference when replacing Billi™ 996911 or 996912 cylinders.
Which Billi™ Systems Use CO₂ Cylinders?
Not every Billi™ system uses a CO₂ cylinder. CO₂ is required when the underbench system includes sparkling water functionality.
Current and documented Billi™ sparkling ranges include:
- Billi™ Home BCS - boiling, chilled and sparkling water
- Billi™ Home B5000 Sparkling - boiling, chilled and sparkling water
- Billi™ Quadra Sparkling - boiling, chilled and sparkling water
- Billi™ Alpine Sparkling - chilled and sparkling water
Billi™ has also produced other sparkling configurations, so this should not be treated as an exhaustive list of every system in service.
The important point is to identify the underbench system, not simply the tap you can see above the bench.
Does The Billi™ Tap Type Affect Cylinder Compatibility?
Billi™ systems are available with several dispenser configurations. Depending on the system, these can include XL Levered, Multifunction Mixer and Slimline dispensers.
The dispenser controls how water is accessed, while the underbench equipment determines the system's water functions.
For example, a Billi™ sparkling system may be paired with different dispenser styles without changing the fundamental need for a CO₂ supply.
This means tap appearance alone is not a reliable way to identify which CO₂ cylinder you need.
How To Identify Your Billi™ System And Cylinder
If you already have a Billi™ sparkling system but are unsure which replacement cylinder you need, start beneath the bench.
Check for:
- The model information on the Billi™ underbench unit.
- Whether the system provides sparkling water.
- Product codes or identification on the existing CO₂ cylinder.
- References to 996911 or 996912 in previous orders, invoices or system documentation.
A photo of the system label and existing cylinder can also be useful when checking compatibility.
If you establish that your system uses 996911 or 996912, you have a direct reference for the EcoVenza compatible replacement. For an older or unidentified installation where the cylinder requirement remains unclear, use the Billi™ CO₂ Cylinder Compatibility Checker rather than relying on appearance.
Common Billi™ Cylinder Identification Mistakes
The most common source of confusion is identifying the visible dispenser rather than the complete system.
Assuming Every Billi™ System Uses CO₂
Billi™ produces different water-system configurations. CO₂ is relevant to systems with a sparkling-water function, not simply any product carrying the Billi™ name.
Treating 996911 And 996912 As Different Cylinder Types
The codes describe different pack quantities. 996911 is a single cylinder, and 996912 is a two-pack.
Matching A Replacement By Appearance
Two cylinders can appear similar without that alone establishing compatibility. Use the existing product code, system information and verified replacement specifications.
Assuming A Current Model List Covers An Older Installation
Billi™ systems have been installed over many years. If an older system cannot be confidently matched to the documented cylinder requirement, check it before ordering.
Why EcoVenza Uses 1.3kg Of CO₂
EcoVenza's compatible cylinder uses the same 2.2L cylinder volume while containing 1.3kg of food-grade CO₂ rather than 1.1kg.
The practical advantage is more carbonation gas available from each cylinder. EcoVenza cylinders contain 1.3kg of gas and can produce up to approximately 260 litres of sparkling water, although actual output varies according to carbonation settings and usage.
This distinction is more useful than comparing cylinder appearance alone. Customers replacing a Billi™ cylinder can retain the compatible 2.2L format while receiving a higher CO₂ fill.
What About Empty Billi™ Cylinders?
Cylinder replacement also creates an ongoing question about what happens to the empties.
EcoVenza's ReCylinder™ program provides a recycling pathway for eligible empty 2.2L CO₂ cylinders. Eligible EcoVenza purchases can include a ReCylinder™ credit that can be used to arrange collection for recycling.
For customers regularly replacing sparkling-water cylinders, this provides a more structured end-of-life pathway rather than leaving empty cylinders unused or disposing of them incorrectly.
Full eligibility and collection details should be checked on the dedicated ReCylinder™ page.
Billi™ CO₂ Cylinder Compatibility Questions
These questions cover situations where the correct replacement may not be immediately obvious.
Does Every Billi™ Sparkling System Use The Same Cylinder?
Billi™ lists its current replacement cylinders as suitable for its sparkling models, but older installations can be harder to identify. If you cannot establish the cylinder requirement from the system or existing cylinder, check compatibility before ordering.
Can I Identify My Billi™ Cylinder From The Tap?
Not reliably. Different Billi™ systems can use different dispenser configurations. Check the underbench system and existing cylinder rather than identifying compatibility from the tap alone.
How Much Sparkling Water Will I Get From One Cylinder?
There is no single guaranteed figure because CO₂ consumption varies with carbonation settings, system configuration and usage. EcoVenza states that its 1.3kg cylinder can provide up to approximately 260 litres.
Can I Recycle My Empty Billi™ Cylinder Through EcoVenza?
Eligible empty 2.2L cylinders can be handled through EcoVenza's ReCylinder™ program, subject to the program's current eligibility and collection conditions.
What If I Cannot Identify My Billi™ System?
Record or photograph the model information on the underbench unit and the markings on the existing cylinder. Then use the Billi™ CO₂ Cylinder Compatibility Checker to establish the appropriate replacement pathway.
Replace Your Billi™ CO₂ Cylinder With Confidence
If your system uses Billi™ 996911 or 996912, EcoVenza's compatible 2.2L cylinder provides 1.3kg of food-grade CO₂, compared with 1.1kg in the Billi™ cylinder.
You can review the Billi™ Compatible CO₂ Cylinder 2-Pack for product specifications and purchasing. If you have an older or unidentified system, use the Billi™ CO₂ Cylinder Compatibility Checker first.