--- product_id: 162937264 title: "CO2 Cylinder Tank W21.8 CGA320 Adapter Converter for Aquarium Fish Tank CO2 tank W21.8 or CGA320 adapter converter(W21.8 convert to CGA320)" brand: "fdit" price: "R793" currency: ZAR in_stock: true reviews_count: 2 category: "Fdit" url: https://www.desertcart.co.za/products/162937264-co2-cylinder-tank-w21-8-cga320-adapter-converter-for-aquarium store_origin: ZA region: South Africa --- # Universal W21.8 to CGA320 compatibility Premium brass build for durability Quiet, stable operation CO2 Cylinder Tank W21.8 CGA320 Adapter Converter for Aquarium Fish Tank CO2 tank W21.8 or CGA320 adapter converter(W21.8 convert to CGA320) **Brand:** fdit **Price:** R793 **Availability:** ✅ In Stock ## Summary > 🔗 Connect with Confidence: The ultimate CO2 adapter for flawless aquarium harmony. ## Quick Answers - **What is this?** CO2 Cylinder Tank W21.8 CGA320 Adapter Converter for Aquarium Fish Tank CO2 tank W21.8 or CGA320 adapter converter(W21.8 convert to CGA320) by fdit - **How much does it cost?** R793 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/162937264-co2-cylinder-tank-w21-8-cga320-adapter-converter-for-aquarium) ## Best For - fdit enthusiasts ## Why This Product - Trusted fdit brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Tailored Fit:** Available in multiple sizes to perfectly match your CO2 tank setup. - • **Built to Last:** Crafted from premium brass for unmatched durability and corrosion resistance. - • **Seamless Compatibility:** Effortlessly connects US and UK CO2 tanks with W21.8 to CGA320 threading. - • **Tool-Free Installation:** Simple hand-twist setup—no special tools or expertise required. - • **Whisper-Quiet Performance:** Engineered for silent operation, preserving your aquarium’s peaceful ambiance. ## Overview The CO2 Cylinder Tank W21.8 CGA320 Adapter Converter is a premium brass adapter designed to convert W21.8 threads to CGA320, enabling seamless connection between US and UK CO2 tanks. Ideal for aquarium enthusiasts and home brewers, it offers quiet operation, easy hand installation, and multiple size options to ensure perfect compatibility and long-lasting performance. ## Description Free delivery and returns on eligible orders. Buy CO2 Cylinder Tank W21.8 CGA320 Adapter Converter for Aquarium Fish Tank CO2 tank W21.8 or CGA320 adapter converter(W21.8 convert to CGA320) at desertcart UK. Review: This is the adapter for USA to UK co2 cylinders - Well machined and perfect fit. This w21.8 to cga320 is what you need to connect a USA or foreign cga320 nut to a standard UK w21.8 thread. It's taken me 4 attempts to find this as other desertcart listing's aren't explicit and so I've received items that adapt the wrong way. Review: This didn't fit - The Adaptor didn't fit, the description got the numbers the wrong way round. I reordered the same thing from another supplier and that one worked as expected. ## Features - Premium Brass Material: Constructed from premium brass, this CO2 tank adapter ensures durability and longevity, providing reliable performance for your aquarium needs. - Versatile Compatibility: Easily connect a paintball CO2 tank to your existing keg system CO2 regulator, making it a practical solution for both aquarium enthusiasts and home brewers. - Quiet Operation: Designed for stability and quiet functionality, this adapter can be used seamlessly with your aquarium CO2 regulator, ensuring a peaceful environment for aquatic life. - Simple Installation: Installing the adapter is quick and easy—simply twist by hand without the need for special tools or extensive skills, making it user-friendly for everyone. - Multiple Size Options: Available in two sizes, you can choose the adapter that best suits your setup, ensuring compatibility with your specific CO2 tank requirements. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07S3TDCNM | | Best Sellers Rank | 173,084 in Pet Supplies ( See Top 100 in Pet Supplies ) 411 in Aquarium Air Pumps | | Brand | Fdit | | Brand Name | Fdit | | Country Of Origin | China | | Customer Reviews | 3.8 out of 5 stars 3 Reviews | | Item Weight | 0.1 Kilograms | | Item weight | 0.1 Kilograms | | Manufacturer | Fditt | | Manufacturer Part Number | Fdit1gzeg79hdkx-01 | | Number of Items | 1 | | Number of items | 1 | | Pet Type | Fish | | Target Species | Fish | | UPC | 701069880717 | ## Product Details - **Brand:** Fdit - **Item weight:** 0.1 Kilograms - **Manufacturer:** Fditt - **UPC:** 701069880717 ## Images ![CO2 Cylinder Tank W21.8 CGA320 Adapter Converter for Aquarium Fish Tank CO2 tank W21.8 or CGA320 adapter converter(W21.8 convert to CGA320) - Image 1](https://m.media-amazon.com/images/I/51-GSGMOeAL.jpg) ![CO2 Cylinder Tank W21.8 CGA320 Adapter Converter for Aquarium Fish Tank CO2 tank W21.8 or CGA320 adapter converter(W21.8 convert to CGA320) - Image 2](https://m.media-amazon.com/images/I/61snxdP4MML.jpg) ![CO2 Cylinder Tank W21.8 CGA320 Adapter Converter for Aquarium Fish Tank CO2 tank W21.8 or CGA320 adapter converter(W21.8 convert to CGA320) - Image 3](https://m.media-amazon.com/images/I/51utqHEsS9L.jpg) ![CO2 Cylinder Tank W21.8 CGA320 Adapter Converter for Aquarium Fish Tank CO2 tank W21.8 or CGA320 adapter converter(W21.8 convert to CGA320) - Image 4](https://m.media-amazon.com/images/I/61RT+6FsogL.jpg) ![CO2 Cylinder Tank W21.8 CGA320 Adapter Converter for Aquarium Fish Tank CO2 tank W21.8 or CGA320 adapter converter(W21.8 convert to CGA320) - Image 5](https://m.media-amazon.com/images/I/61xbEULRsOL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ This is the adapter for USA to UK co2 cylinders *by C***D on 28 January 2024* Well machined and perfect fit. This w21.8 to cga320 is what you need to connect a USA or foreign cga320 nut to a standard UK w21.8 thread. It's taken me 4 attempts to find this as other Amazon listing's aren't explicit and so I've received items that adapt the wrong way. ### ⭐ This didn't fit *by R***S on 8 April 2023* The Adaptor didn't fit, the description got the numbers the wrong way round. I reordered the same thing from another supplier and that one worked as expected. ## Frequently Bought Together - CO2 Cylinder Tank W21.8 CGA320 Adapter Converter for Aquarium Fish Tank CO2 tank W21.8 or CGA320 adapter converter(W21.8 convert to CGA320) - CO2 Cylinder Tank W21.8 CGA320 Adapter Converter for Aquarium Fish Tank CO2 tank W21.8 or CGA320 adapter converter(CGA320 convert to W21.8) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.za/products/162937264-co2-cylinder-tank-w21-8-cga320-adapter-converter-for-aquarium](https://www.desertcart.co.za/products/162937264-co2-cylinder-tank-w21-8-cga320-adapter-converter-for-aquarium) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-09-29*