01AUTOMOTIVE REPAIR & SPECIALITY TOOLS
Brass Precision for Carbonation
A small but vital piece of hardware, this brass adapter sits between your carbonation cylinder and the soda maker, ensuring a steady flow of fizz. Its polished surface catches the light, adding a touch of industrial elegance to the kitchen counter.
Designed for precision, it connects CGA320 and TR21-4 threads seamlessly. It suits home brewers and appliance owners who value reliability and want a durable replacement for worn components.


02MATERIALS
Polished Brass Construction
Crafted from high-polish brass, the adapter offers a sturdy, durable body that resists wear over time. The gold-toned finish is not merely cosmetic; it reflects the quality of the metal beneath, providing a stable base for the connection. This material choice ensures the component remains functional and visually appealing through repeated use.

04CONTENTS
Complete Assembly Kit
The package includes everything needed for setup: one CO2 filling adapter, six gaskets, nine retainers, a wrench, and a brass adapter. These components work together to ensure a secure fit. The included wrench assists with tightening, while the multiple gaskets provide options for different sealing needs, making maintenance straightforward and self-contained.
05AT A GLANCE
The key points
- High polish brass construction in a warm gold finish
- CGA320 thread meets TR21-4 for soda machine compatibility
- Approximately 7.8 cm length and 393 g weight
- Includes six gaskets, nine retainers and a wrench


06
Highlights
- Applicable Countries
- the United States, Canada, Brazil, Colombia, the Philippines… (some countries are also called G1/2-14/0.825-14NGO)
- Application
- It is the pin valve of the gas cylinder of the soda water machine/bubble water machine, used to connect the gas cylinder/inflate
07
About this product
1, The thread size is CGA320 at one end and TR21‑4 at the other end, which is convenient to use. 2, Good sealing performance, no air leakage when connected with the cylinder. 3, Made of premium material, which is sturdy and ensures maximum durability. 4, Easy to use and install, a perfect replacement for the old and broken one. 5, It features professional manufacturing, stable performance and high reliability.
Please allow 1‑2in error due to manual measurement. Thanks for your understanding.
Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.
Specification
Item Type: CO2 Filling Adapter
Material: High Polish Brass
Color: Gold
Total Length: Approx.7.8cm/3.1in
Thread Size: CGA320 // TR21-4
Weight: Approx.393g/13.9oz
Package List
1 x CO2 Filling Adapter
6 x Gasket
9 x Retainer
1 x Wrench
1 x Brass Adapter
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