---
product_id: 600079692
title: "Tank Adapter CO2, CO2 Cylinder Tank W21.8 CGA320 Adapter Converter for Aquarium Fish Tank(Convert W21.8 to CGA320)"
brand: "milltrip"
price: "$32.18"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/600079692-tank-adapter-co2-co2-cylinder-tank-w21-8-cga320-adapter
store_origin: US
region: United States of America
---

# Universal CO2 tank compatibility Tool-free easy installation Premium brass durability Tank Adapter CO2, CO2 Cylinder Tank W21.8 CGA320 Adapter Converter for Aquarium Fish Tank(Convert W21.8 to CGA320)

**Brand:** milltrip
**Price:** $32.18
**Availability:** ✅ In Stock

## Summary

> 🔧 Connect with Confidence: The Ultimate CO2 Adapter for Pros Who Demand Precision

## Quick Answers

- **What is this?** Tank Adapter CO2, CO2 Cylinder Tank W21.8 CGA320 Adapter Converter for Aquarium Fish Tank(Convert W21.8 to CGA320) by milltrip
- **How much does it cost?** $32.18 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/600079692-tank-adapter-co2-co2-cylinder-tank-w21-8-cga320-adapter)

## Best For

- milltrip enthusiasts

## Why This Product

- Trusted milltrip brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **No Tools, No Hassle:** Install in seconds with a simple hand twist—no special skills or tools required.
- • **Tailored Fit Options:** Choose from two precise sizes to perfectly match your CO2 setup and avoid leaks.
- • **Whisper-Quiet Operation:** Stable and silent CO2 flow ensures a peaceful environment for your aquatic life.
- • **Built to Last with Brass:** Crafted from high-quality brass for unmatched durability and corrosion resistance.
- • **Seamless CO2 Compatibility:** Effortlessly converts W21.8 to CGA320, bridging your paintball tank to aquarium systems.

## Overview

The Milltrip Tank Adapter CO2 is a robust brass converter designed to connect paintball CO2 tanks (W21.8) to aquarium regulators (CGA320). Lightweight yet durable, it offers easy, tool-free installation and quiet operation, making it an essential upgrade for aquarium enthusiasts and paintball pros seeking seamless CO2 integration.

## Description

Specification: Condition: 100% Brand New Material: brass  Color: as pictures shown  Type: 1, 2(optional) Type1: W21.8(out thread) convert to CGA320(inner thread) Type2: CGA320(out thread) convert to W21.8(inner thread) Diameter: 2.8cm/1.1in  Package list: 1 * CO2 Tank Adapter

## Features

- BRASS MATERIAL: Made of high quality brass material, durable and long lasting.
- FEATURES: It allows you to attach a paintball CO2 tank to your existing keg system CO2 regulator.
- EASY TO INSTALL: Easy to install, just twist by hand, no high installation skill required.
- AVAILABLE SIZES: 2 sizes available, you can choose the right one you need. Great kits for your aquarium tank.
- SCOPE OF APPLICATION: Stable, quiet and no noise. Can be used for CO2 regulator at the aquarium.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Milltrip |
| Model Number | Milltriph207mf8gpy5273-01 |
| Color | Convert W21.8 to CGA320 |
| Package Dimensions | 9 x 7 x 3 cm; 97 g |
| Material | Brass |
| Item Weight | 97 g |

## Images

![Tank Adapter CO2, CO2 Cylinder Tank W21.8 CGA320 Adapter Converter for Aquarium Fish Tank(Convert W21.8 to CGA320) - Image 1](https://m.media-amazon.com/images/I/51cqHSA9i3L._AC_UL320_.jpg)
![Tank Adapter CO2, CO2 Cylinder Tank W21.8 CGA320 Adapter Converter for Aquarium Fish Tank(Convert W21.8 to CGA320) - Image 2](https://m.media-amazon.com/images/I/51cqHSA9i3L._AC_UL480_FMwebp_QL65_.jpg)
![Tank Adapter CO2, CO2 Cylinder Tank W21.8 CGA320 Adapter Converter for Aquarium Fish Tank(Convert W21.8 to CGA320) - Image 3](https://m.media-amazon.com/images/I/51cqHSA9i3L._AC_UL640_FMwebp_QL65_.jpg)
![Tank Adapter CO2, CO2 Cylinder Tank W21.8 CGA320 Adapter Converter for Aquarium Fish Tank(Convert W21.8 to CGA320) - Image 4](https://m.media-amazon.com/images/I/51cqHSA9i3L._AC_UL800_FMwebp_QL65_.jpg)
![Tank Adapter CO2, CO2 Cylinder Tank W21.8 CGA320 Adapter Converter for Aquarium Fish Tank(Convert W21.8 to CGA320) - Image 5](https://m.media-amazon.com/images/I/51cqHSA9i3L._AC_UL960_FMwebp_QL65_.jpg)

## Available Options

This product comes in different **Color** options.

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**Shop now:** [https://www.desertcart.us/products/600079692-tank-adapter-co2-co2-cylinder-tank-w21-8-cga320-adapter](https://www.desertcart.us/products/600079692-tank-adapter-co2-co2-cylinder-tank-w21-8-cga320-adapter)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-16*