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A FreedomOne “Terra” SodaStream adapter is a brass and high-pressure hose fitting that allows newer-style SodaStream machines—like the Terra, Art, or Duo—to use much larger refillable CO₂ cylinders instead of the small disposable canisters.

• Purpose: Connects your SodaStream directly to a larger 2–6 kg CO₂ tank, bypassing the expensive and wasteful 60 L disposable cylinders 

• Build: Made from durable brass and high-pressure-rated hose (~300 bar capacity), ensuring reliable and safe carbonation 

• Variants: Available in 0.9 m (36") or 1.8 m (72") lengths, and comes with two connection styles:

  • Quick‑disconnect “push‑in” for Terra/Art/Duo models.

  • Threaded fitting for older screw‑in SodaStream models 

Benefits

• Huge cost savings: A large 2.6 kg tank provides ~390 L of carbonation for ~AUD 25–30, while a standard cylinder may run ~$20 for just 60 L — a typical adapter pays for itself after just one refill

• Eco-friendly: Reduces waste by eliminating single-use CO₂ cylinders.

Setup Overview

1. Choose the right hose type: Quick-disconnect for Terra/Art/Duo; threaded for older machines.

2. Attach the adapter to the machine’s back in place of the small cylinder; tighten securely, but avoid overtightening the plastic parts i

3. Connect to the large CO₂ tank, ensuring proper sealing (O-rings, tape/Loctite if monkeying around with bench-top installations) 

4. Leak-test using soapy water or activating the carbonate function Enjoy back-to-back batches of homemade sparkling water with fewer refills and more value.