01AIR COMPRESSORS ACCESSORIES
Seamless connection for carbonated water
The small red brass piece that sits between your soda maker and the gas cylinder is often overlooked, yet it defines the reliability of your sparkling water supply. Its compact form hides a precise engineering solution for those who prefer the convenience of standard CO2 bottles over proprietary cartridges.
This adapter allows you to use conventional TR21-4 cylinders with DUO, Art and Terra systems. It suits homeowners who want to maintain their existing water acidifier without being tied to specific brand-exclusive gas sources, ensuring a continuous flow of crisp, carbonated water.
02MATERIALS
Durable brass core for lasting performance
Crafted from high-strength brass, the adapter offers a robust alternative to plastic components. The metal body is designed to withstand daily handling and pressure changes, resisting corrosion and maintaining its structural integrity over time. This material choice ensures the fitting remains smooth and functional, even after repeated cycles of attachment and detachment from the heavy CO2 cylinder.
04INSTALLATION
Simple integration into your water system
Installing the adapter requires removing the pink component from the bottom of the soda machine by pressing the pin. One end connects to the acidifier while the other accepts the TR21-4 cylinder. For newer DUO and ART models, a minor adjustment may be needed to the bottle chamber container to ensure the cylinder inserts correctly. The process is straightforward, requiring no special tools or complex mechanical knowledge.
DETAILS
Precision sealing and distinct visual cue
The package includes a dedicated sealing ring, essential for preventing leaks at the junction between the adapter and the cylinder. The bright red finish provides a clear visual indicator that the quick-connect system is in place, distinguishing it from the metallic tones of the machine itself. This attention to detail ensures a secure, leak-free connection every time you fill your glass.
AT A GLANCE
The key points
- High-quality brass construction resists rust and wear
- Fits standard TR21-4 trapezoidal thread cylinders
- Compatible with DUO, Art and Terra water acidifiers
- Includes one sealing ring for a tight seal
- Red finish distinguishes the adapter from the machine
About this product
Compatibility: Fits many standard CO2 cylinders that have the conventional TR21-4 trapezoidal thread. After installation, you can now also use CO2 cylinders from previous versions, compatible with DUO, Art and Terra water acidifiers. High-quality material: Our CO2 adapter is made of high-quality brass, is rustproof / durable / high-strength, has higher safety, is not easy to damage and has a long service life. Easy to install: One end of the quick adapter connects to the Duo water acidifier and the other end of the TR21-4 to the 60-liter CO2 bottle. You must first remove the pink part from the bottom of the soda machine (press the pin to pull). For DUO and ART machines of the new version, a small piece of the bottle chamber container must be cut away so that the bottle can be inserted into the compartment. Efficient and economical: With this adapter you can continue to use your original CO2 cylinders and save yourself the hassle of changing in the store and the cost of replacing CO2 cylinders. Now you can also use CO2 cylinders from previous versions. Note: Before purchasing, please make sure that your CO2 cylinder including the valve is original (not Quooker), otherwise the Quick CO2 adapter may not screw in far enough to work in the new soda machine. Color: red Material: metal Package Contents: 1 x CO2 Quick Adapter 1 x Sealing Ring The above package contents only, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3 cm.
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