---
product_id: 65419237
title: "1pc W21.8 Oulet Argon CO2 Gas Brass Pressure Regulator Mig Tig Welding Flow Meter Gauge"
brand: "jwn"
price: "C$6532"
currency: NIO
in_stock: true
reviews_count: 8
url: https://www.desertcart.ni/products/65419237-1pc-w21-8-oulet-argon-co2-gas-brass-pressure-regulator
store_origin: NI
region: Nicaragua
---

# Twin pressure gauges for accuracy W21.8 outlet precision fit External safety valve auto-release 1pc W21.8 Oulet Argon CO2 Gas Brass Pressure Regulator Mig Tig Welding Flow Meter Gauge

**Brand:** jwn
**Price:** C$6532
**Availability:** ✅ In Stock

## Summary

> 🔥 Weld Like a Pro with Precision & Safety ⚙️

## Quick Answers

- **What is this?** 1pc W21.8 Oulet Argon CO2 Gas Brass Pressure Regulator Mig Tig Welding Flow Meter Gauge by jwn
- **How much does it cost?** C$6532 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/65419237-1pc-w21-8-oulet-argon-co2-gas-brass-pressure-regulator)

## Best For

- jwn enthusiasts

## Why This Product

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

## Key Features

- • **Rugged Durability:** Impact-resistant polycarbonate flow tube and cover built to withstand tough workshop environments.
- • **Dual Gauge Clarity:** Twin pressure gauges provide crystal-clear, real-time readings to fine-tune your gas flow with high precision.
- • **Safety First Design:** External safety valve automatically releases excess pressure, protecting you and your equipment from hazards.
- • **Back Pressure Compensation:** Flowmeter adjusts for line restrictions ensuring ultra-accurate gas flow measurements every time.
- • **Precision Pressure Control:** Easily dial down Argon or CO2 gas pressure with W21.8 outlet compatibility for flawless welding performance.

## Overview

This brass and stainless steel pressure regulator with W21.8 outlet is engineered for Argon and CO2 gas bottles, featuring twin pressure gauges, back pressure compensated flowmeter, and an external safety valve. Designed for durability and precision, it ensures safe, accurate gas flow control ideal for MIG/TIG welding and other professional applications.

## Description

Specification:Brand newMaterial: Brass, stainless steelInlet pressure: 0-20 mpa / 0-315 barOutput pressure range: 20-22 mpaFlow: 0-20L / minMax flow rate: 40 m3/hInlet thread: W21.8 x 1/14 Feature:Design for Argon, CO2 gas bottle with W21.8 outlet, allows to reduce the pressure of gas coming from a bottle to desired levelTwin pressure gauge, easy to read, helps adjusting the outlet pressure in high precision.Flowmeter is back pressure compensated to ensure accurate readings when line restrictions are present.Polycarbonate flow tube and outer cover are impact resistant for maximum durabilityExternal safety valve equipped, auto released outside if the pressure over safe level.Precise and reliable.Easy to use.Durable in use. Package included:1 x Flowmeter

Review: Perfect for ultra simple Fire Extinguisher Aquarium CO2 - There's a very simple way of adding CO2 to aquariums that involves just sticking an inverted plastic bottle in the tank and letting the CO2 slowly diffuse into the water. When you have multiple tanks and don't want to spend a fortune on solenoid switched dual stage regulators and diffusers for each aquarium, then the bottle trick is very simple and very cheap. This regulator and a bit of tubing is all you need. No its very definitely not as good as a proper set up, but that little bit of extra CO2 is appreciated by the plants, and the natural diffusion means you don't have to stress about setting precise levels. At least I don't :)
Review: Well engineered - Does what it says. However, money taken first and then late delivery. Hmm.

## Features

- Design for Argon, CO2 gas bottle with W21.8 outlet, allows to reduce the pressure of gas coming from a bottle to desired level
- Twin pressure gauge, easy to read, helps adjusting the outlet pressure in high precision.
- Flowmeter is back pressure compensated to ensure accurate readings when line restrictions are present.
- Polycarbonate flow tube and outer cover are impact resistant for maximum durability
- External safety valve equipped, auto released outside if the pressure over safe level.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07CXVK1HM |
| Batteries Required? | No |
| Batteries included? | No |
| Customer Reviews | 3.9 3.9 out of 5 stars (105) |
| Date First Available | 8 May 2018 |
| Item Weight | 660 g |
| Manufacturer | Jwn |
| Manufacturer reference | Handtool-822 |
| Material | Metal |
| Package Dimensions | 13.9 x 13.2 x 12.6 cm; 660 g |
| Part Number | Handtool-822 |

## Images

![1pc W21.8 Oulet Argon CO2 Gas Brass Pressure Regulator Mig Tig Welding Flow Meter Gauge - Image 1](https://m.media-amazon.com/images/I/31iZk3wR68L.jpg)
![1pc W21.8 Oulet Argon CO2 Gas Brass Pressure Regulator Mig Tig Welding Flow Meter Gauge - Image 2](https://m.media-amazon.com/images/I/411dobs4qAL.jpg)
![1pc W21.8 Oulet Argon CO2 Gas Brass Pressure Regulator Mig Tig Welding Flow Meter Gauge - Image 3](https://m.media-amazon.com/images/I/41KV+HlfOGL.jpg)
![1pc W21.8 Oulet Argon CO2 Gas Brass Pressure Regulator Mig Tig Welding Flow Meter Gauge - Image 4](https://m.media-amazon.com/images/I/61zC6pvT8XL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect for ultra simple Fire Extinguisher Aquarium CO2
*by J***. on 14 January 2020*

There's a very simple way of adding CO2 to aquariums that involves just sticking an inverted plastic bottle in the tank and letting the CO2 slowly diffuse into the water. When you have multiple tanks and don't want to spend a fortune on solenoid switched dual stage regulators and diffusers for each aquarium, then the bottle trick is very simple and very cheap. This regulator and a bit of tubing is all you need. No its very definitely not as good as a proper set up, but that little bit of extra CO2 is appreciated by the plants, and the natural diffusion means you don't have to stress about setting precise levels. At least I don't :)

### ⭐⭐⭐⭐ Well engineered
*by A***P on 4 March 2020*

Does what it says. However, money taken first and then late delivery. Hmm.

### ⭐⭐⭐⭐⭐ Just what I needed
*by C***H on 20 February 2021*

Needed this regulator and flow meter for mig 150 welder to use in gas mode. Fits directly to Pubgas CO2 bottle with spigot for welder connecter hose.

---

## 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.ni/products/65419237-1pc-w21-8-oulet-argon-co2-gas-brass-pressure-regulator](https://www.desertcart.ni/products/65419237-1pc-w21-8-oulet-argon-co2-gas-brass-pressure-regulator)

---

*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-01-26*