--- product_id: 528886075 title: "- Oxygen Acetylene Flashback Arrestors Set Regulator End - Standard \"B\" 9/16-18UNF Threads Size" brand: "rx weld" price: "S$35" currency: SGD in_stock: true reviews_count: 10 url: https://www.desertcart.sg/products/528886075-oxygen-acetylene-flashback-arrestors-set-regulator-end-standard-b-9 store_origin: SG region: Singapore --- # 9/16-18UNF precision thread fit Durable pure brass construction One-way check valve for safety - Oxygen Acetylene Flashback Arrestors Set Regulator End - Standard "B" 9/16-18UNF Threads Size **Brand:** rx weld **Price:** S$35 **Availability:** βœ… In Stock ## Summary > πŸ› οΈ Safety Meets Precision: The Must-Have Flashback Arrestor for Every Pro Welder ## Quick Answers - **What is this?** - Oxygen Acetylene Flashback Arrestors Set Regulator End - Standard "B" 9/16-18UNF Threads Size by rx weld - **How much does it cost?** S$35 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/528886075-oxygen-acetylene-flashback-arrestors-set-regulator-end-standard-b-9) ## 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 - β€’ **Robust Brass Build:** Crafted from pure brass, engineered for long-lasting durability and reliable performance under pressure. - β€’ **Unmatched Safety Assurance:** One-way check valve design prevents dangerous gas backflow, protecting your workspace from flashbacks. - β€’ **Versatile Gas Compatibility:** Optimized for Oxygen, Acetylene, Propane, and Mapp gasesβ€”flexibility that keeps you ready for any job. - β€’ **Precision Thread Compatibility:** Seamlessly fits standard 'B' size regulators with 9/16-18UNF threads for hassle-free installation. - β€’ **Pressure Rated for Performance:** Supports up to 290 PSI on oxygen and 21 PSI on acetylene, ensuring consistent and safe operation. ## Overview The RX WELD Oxygen Acetylene Flashback Arrestors Set features a precision 9/16-18UNF thread fit for standard 'B' size regulators, a one-way check valve to prevent gas backflow, and a durable pure brass construction. Rated for up to 290 PSI oxygen and 21 PSI acetylene, it supports multiple gases including propane and Mapp, delivering reliable safety and versatility for professional welding applications. ## Description 25 Feet Torch Hose CGA540 and CGA200 CGA540 and CGA510 Fitting 9/16”-18LH/RH Fitting Outlet thread 9/16"-18 for 1/4 Inch B fittings twin welding hose Fitting Outlet thread 9/16"-18 for 1/4 Inch B fittings twin welding hose Material Rubber Material Brass Material Brass Applicable Gas Oxygen and Acetylene Applicable Gas Oxygen and Acetylene Applicable Gas Oxygen and Acetylene ## 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 | |---------------|-------| | Asin | B0BX649LTC | | Batteries Included | No | | Batteries Required | No | | Best Sellers Rank | #49,114 in Automotive (See Top 100 in Automotive) #557 in Welding Equipment & Accessories | | Customer Reviews | 4.5 4.5 out of 5 stars (206) 4.5 out of 5 stars | | Date First Available | March 1, 2023 | | Included Components | Flashback Arrestors | | Item Model Number | RX WELD Flashback Arrestors | | Item Package Quantity | 1 | | Item Weight | 8.8 ounces | | Manufacturer | RX WELDER | | Package Dimensions | 3.94 x 2.17 x 1.18 inches | | Part Number | RX WELD Flashback Arrestors | | Power Source | gas_powered | | Style | for Regulator | ## Images ![- 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) ![- 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) ![- 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) ![- 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) ![- 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** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good value for safety *by on Reviewed in the United States February 6, 2026* Good value, quality materials and functions well. ### ⭐⭐⭐⭐⭐ Worked grrat *by on Reviewed in the United States February 23, 2026* Great fit ### ⭐⭐⭐⭐⭐ Great price! *by on Reviewed in the United States October 14, 2025* Good flaskback arrestors. These are my first pair, but they are working and nothing more to be said. Great price too. ## 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 Γ— 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? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sg/products/528886075-oxygen-acetylene-flashback-arrestors-set-regulator-end-standard-b-9](https://www.desertcart.sg/products/528886075-oxygen-acetylene-flashback-arrestors-set-regulator-end-standard-b-9) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-08-22*