Aquascaping Essentials Brass CO₂ Sodastream Adapter

The Aquascaping Essentials Brass Sodastream CO₂ Adapter allows Australian and New Zealand Sodastream CO₂ cylinders to be used with standard W21.8 (DIN 477) aquarium CO₂ regulators.

Crafted from solid brass and fitted with internal seals, this adapter provides a secure and durable connection. It also features a built-in control knob for manual CO₂ release — and includes spare washers for future maintenance.

Key Features:

• Adapts AU/NZ Sodastream cylinder thread to W21.8 CO₂ regulators
• Solid brass construction with a built-in flow control knob
• Internal seals pre-installed, with spare washers provided
• Tool-free installation for planted aquarium CO₂ systems
• Important: Control knob must be closed before attachment

⚠ Important Safety Note:

Before screwing the adapter onto your Sodastream cylinder, always ensure the control knob is fully turned counter-clockwise (closed). This prevents the internal pin from opening the valve prematurely and releasing CO₂ unexpectedly.

Instructions for Use:

1. Ensure the control knob on the adapter is fully closed (counter-clockwise) before installation.
2. Screw the adapter onto your AU/NZ Sodastream cylinder until hand-tight. This will position the adapter without triggering gas flow.
3. Attach your aquarium CO₂ regulator to the W21.8 (DIN 477) outlet on the adapter.
4. Once all connections are secure, slowly open the control knob to release CO₂.
5. Use soapy water or leak detection spray to test all fittings for leaks.

Spare washers are included for future use if internal seals degrade or require replacement.
This adapter is pre-fitted with working seals — no assembly required out of the box.