---
product_id: 557046684
title: "VAPHY Oxygen Acetylene Flashback Arrestors Set Regulator End 9/16-18 Threads B Size"
brand: "vaphy"
price: "NT$1218"
currency: TWD
in_stock: true
reviews_count: 8
url: https://www.desertcart.tw/products/557046684-vaphy-oxygen-acetylene-flashback-arrestors-set-regulator-end-9-16
store_origin: TW
region: Taiwan
---

# One-way check valve safety Max pressure 210 PSI O2 / 21 PSI Acetylene Pure copper durability VAPHY Oxygen Acetylene Flashback Arrestors Set Regulator End 9/16-18 Threads B Size

**Brand:** vaphy
**Price:** NT$1218
**Availability:** ✅ In Stock

## Summary

> 🛠️ Safety Meets Precision – Don’t Compromise on Your Gas Setup!

## Quick Answers

- **What is this?** VAPHY Oxygen Acetylene Flashback Arrestors Set Regulator End 9/16-18 Threads B Size by vaphy
- **How much does it cost?** NT$1218 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/557046684-vaphy-oxygen-acetylene-flashback-arrestors-set-regulator-end-9-16)

## Best For

- vaphy enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Lightweight:** At just 9.9 ounces and pocket-sized, it’s the perfect safety upgrade without bulk or hassle.
- • **Fail-Safe One-Way Valve:** Innovative check valve design prevents dangerous gas backflow, protecting your workspace and team.
- • **Universal Compatibility:** Threaded 9/16-18 B size fits seamlessly between regulators and hoses, including propane and Mapp gas setups.
- • **Precision Pressure Control:** Handles up to 210 PSI oxygen and 21 PSI acetylene pressure for reliable performance under demanding conditions.
- • **Built to Last with Pure Copper:** Engineered for unmatched durability and corrosion resistance, ensuring long-term safety.

## Overview

This Oxygen Acetylene Flashback Arrestor Set features a durable pure copper build, supports maximum pressures of 210 PSI for oxygen and 21 PSI for acetylene, and incorporates a one-way check valve to prevent dangerous gas backflow. Designed with 9/16-18 B size threads, it fits easily between regulators and hoses, compatible with acetylene, propane, and Mapp gas. Lightweight and compact, it’s an essential safety upgrade for professional-grade gas welding and cutting setups.

## Description

Full description not available

## Features

- 【Durable Material】The flashback arrestor is made of pure copper, which is sturdy and durable.
- 【Working Pressure】The maximum bearing pressure of oxygen check valve is 15bar/210PSI. The maximum bearing pressure of acetylene check valve is 1.5bar/21PSI.
- 【Specification】The thread specification of air inlet and air outlet of flashback arrestor is 9/16-18 B size.
- 【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.
- 【Note】For installation between the regulator and hoses. The acetylene arrestor in this set can also be used for Propane or Mapp gas.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Vaphy |
| Part Number | OX-AC FAS-Blue |
| Item Weight | 9.9 ounces |
| Package Dimensions | 5.79 x 3.27 x 1.34 inches |
| Style | B-1 Set |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![VAPHY Oxygen Acetylene Flashback Arrestors Set Regulator End 9/16-18 Threads B Size - Image 1](https://m.media-amazon.com/images/I/51NN0b98AvL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Husband’s seal of approval
*by J***N on September 23, 2025*

I ordered these for my husband who didn’t have high hopes…he was pleasantly surprised. Said they fit great and worked well.

### ⭐⭐⭐⭐⭐ Safety
*by M***  on April 15, 2025*

Buena compra

### ⭐⭐⭐⭐ So far so good.
*by D***S on April 16, 2025*

I didn't give them 5 star's yet because I just bought these in a pinch. They are working just fine, flow is good and I haven't experienced any restrictions. It's used for about 2 weeks now for several hours a days. No negatives yet other than it's not brand named.

## Frequently Bought Together

- VAPHY Oxygen Acetylene Flashback Arrestors Set Regulator End 9/16-18 Threads B Size
- VAPHY Oxygen Acetylene Flashback Arrestors Set 9/16-18 Threads for Torch
- RX WELD Oxygen and Acetylene Regulators, CGA540 and CGA200, Compatible with V-Style Welding Gas Torch Cutting - PC Handle

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**Shop now:** [https://www.desertcart.tw/products/557046684-vaphy-oxygen-acetylene-flashback-arrestors-set-regulator-end-9-16](https://www.desertcart.tw/products/557046684-vaphy-oxygen-acetylene-flashback-arrestors-set-regulator-end-9-16)

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-01-25*