---
product_id: 516202910
title: "RX Weld Oxygen Acetylene Flashback Arrestors Set Regulator End - Standard \"B\" 9/16-18UNF Threads Size"
brand: "rx weld"
price: "$69.00"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/516202910-rx-weld-oxygen-acetylene-flashback-arrestors-set-regulator-end-standard
store_origin: US
region: United States of America
---

# 9/16-18UNF Standard Thread Durable Pure Brass Build One-way Check Valve Safety RX Weld Oxygen Acetylene Flashback Arrestors Set Regulator End - Standard "B" 9/16-18UNF Threads Size

**Brand:** rx weld
**Price:** $69.00
**Availability:** ✅ In Stock

## Summary

> 🛠️ Safety First, Performance Always – Don’t Weld Without It!

## Quick Answers

- **What is this?** RX Weld Oxygen Acetylene Flashback Arrestors Set Regulator End - Standard "B" 9/16-18UNF Threads Size by rx weld
- **How much does it cost?** $69.00 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/516202910-rx-weld-oxygen-acetylene-flashback-arrestors-set-regulator-end-standard)

## Best For

- rx weld enthusiasts

## Why This Product

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

## Key Features

- • **Precision Thread Fit:** Secure 9/16-18UNF 'B' size connection for seamless regulator integration.
- • **High Pressure Endurance:** Oxygen valve withstands up to 290 PSI; acetylene valve up to 21 PSI for reliable operation.
- • **Robust Brass Construction:** Crafted from pure copper for unmatched durability and long-lasting performance.
- • **Versatile Gas Compatibility:** Works flawlessly with acetylene, propane, and Mapp gases for flexible use.
- • **Ultimate Flashback Protection:** One-way valve design stops dangerous gas backflow, ensuring workplace safety.

## Overview

The RX Weld Oxygen Acetylene Flashback Arrestors Set features a standard 9/16-18UNF 'B' size thread for easy regulator attachment. Built with pure brass, it offers durable protection against flashbacks with a one-way check valve design that prevents dangerous gas backflow. Compatible with acetylene, propane, and Mapp gases, it supports oxygen pressures up to 290 PSI and acetylene pressures up to 21 PSI, making it an essential safety upgrade for any professional welding setup.

## Description

Never connect a torch to acetylene and oxygen tanks without installing a set of flashback arrestors in the hoses at the regulators. Without these safety devices, it is possible a flash can occur within the hose, and ultimately follow back into the tanks, causing an explosion. This would be an extremely rare occurrence, but flashback arrestors will make it a "never" occurrence. Check valves are only a first line of defense and may not ultimately stop a flashback. Only the flashback arrestors will.

## Features

- Application: For installation between the Regulator and Hoses
- The thread specification of flashback arrestor is 9/16-18, B size
- Note: The acetylene arrestor in this set can also be used for Propane or Mapp gas
- Check Valve: The one-way valve design allows the flashback arrestor to guarantee that gas can merely flow in one direction instead of back flow to prevent accidents
- Brass Material: The flashback arrestor is formed by pure copper, which is sturdy and durability. The maximum bearing pressure of oxygen check valve is 20bar/290PSI. The maximum bearing pressure of acetylene check valve is 1.5bar/21PSI

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | RX WELDER |
| Part Number | RX WELD Flashback Arrestors |
| Package Dimensions | 10 x 5.5 x 3 cm; 251 g |
| Item model number | RX WELD Flashback Arrestors |
| Size | adult sex toys clitoral vibrator 16 |
| Colour | Adult Sex Toys Clitoral Vibrator 13 |
| Style | for Regulator |
| Material | adult sex toys clitoral vibrator 13 |
| Shape | adult sex toys clitoral vibrator 13 |
| Power Source | gas_powered |
| Item Package Quantity | 1 |
| Special Features | adult sex toys clitoral vibrator 13 |
| Usage | adult sex toys clitoral vibrator 13 |
| Included Components | Flashback Arrestors |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 251 g |

## Images

![RX Weld Oxygen Acetylene Flashback Arrestors Set Regulator End - Standard "B" 9/16-18UNF Threads Size - Image 1](https://m.media-amazon.com/images/I/71f5u5ESjxL.jpg)
![RX Weld Oxygen Acetylene Flashback Arrestors Set Regulator End - Standard "B" 9/16-18UNF Threads Size - Image 2](https://m.media-amazon.com/images/I/61MlQhFTOeL.jpg)
![RX Weld Oxygen Acetylene Flashback Arrestors Set Regulator End - Standard "B" 9/16-18UNF Threads Size - Image 3](https://m.media-amazon.com/images/I/61GGzMQdcJL.jpg)
![RX Weld Oxygen Acetylene Flashback Arrestors Set Regulator End - Standard "B" 9/16-18UNF Threads Size - Image 4](https://m.media-amazon.com/images/I/61cirtxcnPL.jpg)
![RX Weld Oxygen Acetylene Flashback Arrestors Set Regulator End - Standard "B" 9/16-18UNF Threads Size - Image 5](https://m.media-amazon.com/images/I/71rlUdqD1SL.jpg)

## Available Options

This product comes in different **Style Name** options.

## Frequently Bought Together

- RX WELD Oxygen Acetylene Flashback Arrestors Set Regulator End - Standard "B" 9/16-18UNF Threads Size
- RX WELD Oxygen Acetylene Hose 1/4-Inch × 50 Feet with 9/16"-18 B Fittings, Torch Hose, Grade R
- RX WELD Oxygen and Acetylene Regulators CGA540 and CGA510- Compatible with V-Style Welding Gas Torch Cutting, T-Handle

---

## 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.us/products/516202910-rx-weld-oxygen-acetylene-flashback-arrestors-set-regulator-end-standard](https://www.desertcart.us/products/516202910-rx-weld-oxygen-acetylene-flashback-arrestors-set-regulator-end-standard)

---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-22*