Use a cylinder’s contents only for purposes intended by the supplier. Protect operators, equipment, and installations from flashbacks. Further information can be obtained in the Welding Institute Technical note 7 “Safety in welding and cutting”. If the flashback arrestor is torch mounted, there is potential for foreign material to enter the system and plug the device. Verify that flashback arrestors are installed on the oxygen and acetylene lines. Jan 28, 1992 · Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. , “Acetylene” or “Oxygen”), maximum rated pressure, and flow direction. Non-return valves fitted to the hoses will detect and stop reverse gas flow preventing an inflammable oxygen and acetylene mixture from forming in the hose. This letter constitutes OSHA's interpretation of the requirements discussed. Flashback arrestors were fitted to both the operator’s side of the cylinders and to the blowpipe. This requirement is not intended to apply to storage of acetylene dissolved in a suitable solvent in cylinders manufactured and maintained according to U. It also provides guidelines for the use oxy-fuel systems and the maintenance functions to be carried out. Fires due to incorrect use of the gases and the equipment must be avoided at all costs. ISO 5175-1:2017 does not apply to the use of safety devices incorporating flame arrestors for applications with premixed oxy/fuel or air/fuel gas supply systems, e. The regulations pertaining to the use and maintenance of oxy-acetylene equipment were updated in late 2014 under The Acetylene Safety (England and Wales and Scotland) Regulations 2014 and included a new mandatory requirement to use suitable flashback arrestors. We recommend testing for flow and reverse flow at least once a year (see product instructions for how to test). Gas Pressure: One cause of fires and explosions is high acetylene Jul 15, 2023 · Flashback Arrestors for oxy, acetylene & LPG/propane equipment. The equipment used today is safe, but every year, hundreds of employees are injured or die as a result of improper use. Department of Transportation requirements, or to acetylene for chemical use. Oxy-acetylene torches have been used for many years for cutting, welding, brazing, and heating of metals. The required temperature is provided by the combustion of a fuel gas and oxygen (minimum 99. Flashback arrestor m passing from the hose into the cylinder. Buy your flashback arrestors online from BOC today. Explore our certified flashback arrestors for acetylene systems. Preventing Welding Flashback Oxy-acetylene torches have been used for many years for cutting, welding, brazing, and heating of metals. downstream of gas mixers or a generator to produce hydrogen/oxygen mixture by electrolytic decomposition of water. The flashback arrestor is an automatic flame trap device designed not only to quench the flame but also to prevent the flame from reaching the regulator. These flashback arrestors are arked with the year of manufacture. Dec 14, 2025 · The presence of these marks confirms the arrestor has been tested to withstand the extreme conditions of a flashback and successfully prevent flame transmission. WeldConnect's certified flashback arrestor testing protects your team. Prevent costly accidents and ensure full safety compliance every time. The average lifespan of a typical Flashback Arrestor is 18 months, depending on average use, by CGA and OSHA requirements for industrial applications. 5% purity). Check valves and flashback arrestors should be installed at the location specified by the manufacturer. Book your testing today! Sep 16, 2024 · Join the WeldFab community for industry-leading insights and innovation. We highlight the importance of pressure regulators and flashback arrestors. •Torch and Point of Use flashback arrestors are combination reverse flow check valve and flame barrier in one body. Flashback arrestors are essential to secure the workplaces and working environment. Flashback Arrestors How They Work A flashback arrestor is a gas safety device most commonly used in oxy-acetylene welding and cutting. A flashback arrestor has a sintered flame-arresting element, which acts to exting ish any flame coming into contact with it. The Series 801-7007 and 801-7008 Flashback Arrestor is an economically priced safety device suitable for installation at the inlets of hand or machine oxy-fuel gas torches. Ryval Flashback Arrestors must be rep ced 5 years from first date of use. In accordance with the relevant flashback arrestor standard, testing will be done for, Through Flow, Reverse Flow and Leak Tightness, we will also be inspecting the labeling of the flashback arrestor for compliance. Safety accessories WHaT arE flaSHBaCK arrESTorS Flashback Arrestors prevent reverse flow of gases with built-in check valves and extinguishes flashback fire with a stainless steel sintered how element. REQUIREMENTS: It is the responsibility of the employer/owner/operator to ensure that Flashback Arrestors are fitted to all oxy/fuel plants and comply to the manufacturer’s standard and NZ Health and Safety requirements. Discover premium LPG flashback arrestors for welding and cutting. Prevent accidents, avoid costly downtime, and ensure compliance. Sep 16, 2024 · Join the WeldFab community for industry-leading insights and innovation. Secure your test today! Flashback arrestors rked in accordance with Figure 3. As a training company we often encounter situations where organisations are using portable oxy-acetylene workstations that do not have flashback arrestors fitted. Refer to the Australian standards AS 4839 “Recommended practice for the use of portable oxy-fuel cutting and welding equipment” for a comprehensive list of safety requirements. Jul 15, 2025 · In particular, flashback is a very real danger when welding with oxy acetylene torches. They can provide an increased level of protection in addition to the manufacturers recommended operating procedures. For this reason, a flashback arrestor is the safest and preferred method of protection. Find out how a flashback occurs, and why it is so important to include flashback arrestors as part of your oxy-fuel gas equipment. It stops the flame from reversing up into the gas cylinders. Jan 28, 1992 · Equipment for Welding Operations This is a further response to your memorandum of October 4, 1991, in which you sought guidance as to when flashback arrestors and backflow protective equipment are required in fuel-gas supply systems, in keeping with the requirements of 29 CFR 1910. Western’s Flashback Arrestors are designed to quench flashbacks thereby protecting equipment such as hoses, regulators and cylinders. Note: All brands or types of flashback arrestor that do not meet the relevant standards will be rejected, as will torch end “Flashguards” and non return valves on their own A Practical Guide for Shop Owners & Managers Introduction In welding and fabrication, the biggest threat to profitability isn’t always […] FLASHBACK ARRESTORS What everyone should know about flashback arrestors and associated safety devices. When was the last time you conducted an inspection? Find out how you can stay compliant. Confirm that fire extinguishing equipment (e. One on the fuel line and one on the oxygen line. Oct 30, 2014 · The Acetylene Safety Regulations (ASR) came into force on 1st October 2014. This is a basic but crucial safety feature that is standard on quality oxy-fuel gear like the Cigweld COMET 3 blowpipe. Get expert guidance on installation, technical standards, testing, and replacement protocols. , fire extinguisher, fire blanket) is readily available in case of emergency. May 4, 2018 · Preventing Welding Flashback - Oxy-acetylene torches have been used for many years for cutting, welding, brazing, and heating of metals. Nov 7, 2022 · With the new RISQ 2. FLASHBACK ARRESTORS What everyone should know about flashback arrestors and associated safety devices. S. Reverse flow check valve prevents gas from backing up and mixing the into the supply system. Design Variations: Flashback arrestors come in different configurations depending on the type of gases used (e. A backflow device will not always stop a flashback from reaching the hoses, regulator and cylinders. The equipment used Flashback arrestors from BOC are crucial when welding and cutting with gas to minimise the risks of flames and explosions. Dec 14, 2025 · Master OSHA compliance for flashback arrestors. CONCOA flashback arrestors provide the reliability and safety required in facilities where oxy-fuel welding, heating, and cutting are being performed. Combined with correctly specified flashback arrestors at the regulator and/or handpiece, you get a safer system for both the operator and the workplace. Jan 8, 2026 · Find top-quality esab gas cutting torch with features like flashback arrestor, heavy duty use, and precise gas flow. Arrestors comply with ISO 5175 and arrestor parts are certified cleaned suitable for use with Oxygen service. Never use a damaged cylinder. Causes that can trigger a flashback include: Worn or improperly maintained Equipment, Operator Error, improper monitoring of cylinder pressures, and many o One cause of fires and explosions is high acetylene pressure. Flashback arrestors must display clear markings indicating their intended gas service (e. 253, Oxygen-fuel gas welding and cutting. Regulator and Torch mounted Flashback Arrestors for Oxy, Acetylene & LPG gas cutting & heating equipment. Click to explore verified options now. Here's how to prevent flashback when welding with oxy acetylene torches. The objective of this Standard is to enable owners and operators to understand the functions of equipment used in portable and mobile oxy-fuel systems for welding, cutting, heating and allied processes. They are often integrated into gas regulators, hoses, or directly on welding or cutting torches. This allows you to customize and upgrade your existing Victor® torch to suit your evolving projects. g. A modern quality flashback arrestor made by WITT has at least three protection elements: a gas non-return valve, a flame arrestor and a temperature-sensitive cut-off valve. Flashback Arrestors - Age, Brand, Flow Through, Reverse Flow, Leak Tightness, Labeling, Condition, Compliance to AS 4603 High Pressure Hoses - Age, Damage , Condition, Gas Compatibility Valves and Glands - Leaks, Condition, Function, Ease of Operation, Accessibility in an Emergency Safety Devices - Leaks, Condition, Unauthorized Interference decomposition or detonation of acetylene in the absence of oxygen or air due to flashback at the blowpipe or overheating of gas cylinder, or high-pressure oxygen gas (without fuel gas) which promotes combustion of materials such as oil, grease, organic compounds, aluminium and its alloys, and elastomers used in valve seats and seals; Flashback arrestor with BAM testing to the latest international standard is proof that the IBEDA flashback arrestors have undergone independent product testing to fully comply with the highest standards. The oxy-fuel gas cutting process severs metal by utilizing the chemical reaction of oxygen with metal at elevated temperatures. Required by OSHA, they protect users and equipment from explosions during use. Riviera Maritime Media Serving the information needs of the world’s maritime, offshore and energy industries for over 30 years They are vital items of safety enhancement. 1, best-in-class flashback arrestors and pressure regulators, complete Oxy-acetylene gas welding solution onboard. Jul 15, 2025 · Safe storage and handling is critical for keeping and transporting compressed gases. The use of liquid acetylene shall be prohibited. When a flashback occurs, the flame burns rapidly ‘upstream’, generally causing a loud explosion. Use of oxygen and fuel-gas equipment using, and shutting down oxyg ck valves and flashback arrestors when required by the torch ma Use pressure-reducing regulators approved for the specific gas. Complex/specialist uses of acetylene gas Acetylene users with more complex or specialist needs should check the information provided by their acetylene gas supplier and the manufacturer of the equipment being used before it is first put into use. The valve is protected from damage by sintered stainless steel flame trap. those are Oxy-acetylene Welding, Oxy-gasoline Welding, MAPP Gas Welding, Butane or Propane Welding, and Hydrogen Welding. Knowledge and precautions can prevent fires and violent explosions. 0 update, pressure regulators and flashback arrestors must be inspected annually and replaced every five years after the manufacturing date to prevent degradation and leakage. We have supplied systems for use on continuous casters that supply the torch cutting machines. A “notched date label” on the flashback arrestor allows the end user to mark the date of first use, providing this is The WHS Regulation includes more specific requirements for PCBUs to manage the risks of hazardous chemicals, airborne contaminants and plant, as well as other hazards associated with welding such as noise and manual tasks. Oct 23, 2021 · There are 5 different gas welding types. Usually: (1) they are installed in the gas system between the outlet of the regulator and the inlet of the hose leading to the torch; (2) the inlet and outlet connections are “B” size right hand thread (CGA-022) for oxygen service and “B” size left A flashback arrestor can restrict gas flow if it is too small for the application, causing backfires, short tip life, poor quality work, and even equipment damage. flashback arrestors work Explore our certified flashback arrestors for acetylene systems. Conform to Australian standard AS4603 and independantly certified by Apragaz laboratory in Belgium, Europe. And the user and equipment from damage or explosion. Durable stainless steel safety devices with fast response, ideal for oxy-fuel systems and industrial use. Flashback arrestors, such as models available from Smith Equipment, may also contain a check valve, as in the case of the Smith Equipment device. If you’re using welding equipment in your workplace, here’s what you need to know about national gas bottle storage requirements, as well as flashback arrestor regulations, inspection and testing. Compare prices, MOQ, and supplier ratings. Pressure regulators reduce high cylinder pressures to safer levels while flashback arrestors stop reverse flow and flashbacks - enabling safe use of compressed gases like oxygen and acetylene on ships. Protect your team with WeldConnect's flashback arrestor testing. HOSE LINE FLASHBACK ARRESTORS Hose line flashback arrestors can be used with oxy-fuel gas welding, heating, cutting and allied processes. , oxygen, acetylene) and the specific requirements of the application. Flashback Arrestors Protect personnel & equipment from the dangers of a flashback. Applications An oxy-acetylene torch flashback arrestor is a safety device that prevents dangerous situations such as explosions or flashbacks from occurring while using an oxy-acetylene torch. They are vital items of safety enhancement. Fuel Gases: acetylene and hydrogen. There must be two arrestors or backflow devices. • Oxy-Arc can also produce larger customized powder delivery systems depending on your speciﬁc applications and requirements. •They provide protection against flashback and reverse flow of gases to the operator at the torch or equipment point of use. Flashback arrestors can also have pressure and thermal cut off devices, as well as a non-return valve to stop the gas tr Check that the regulators, hoses, and fittings are connected and in good condition. 0 and RISQ 3. Jan 1, 2025 · Flashback arrestors, crucial gas safety devices, prevent backfires in oxy-fuel cutting equipment. A Guide To The Selection Of Flashback Arrestors This booklet is designed to help you decide whether you need flashback arrestors and help you choose the best models for your needs. Oxygen. Some manufacturers incorporate flashback arrestors and check valves with their torches. Compliant with SIRE 2. The What, Where, and When of Hose Type Flashback Arrestors Harris Products Group Flashback arrestors and check valves are safety devices designed for oxy-fuel systems to prevent or control damage from an occurrence like a flashback. Our patented built-in flashback arrestors and check valves promote exceptional safety and reliability. How do they work? Why is a Flashback dangerous? What are the safety requirements? …& more! We would like to show you a description here but the site won’t allow us. When more than 15 pounds of pressure is used, acetylene becomes unstable and decomposes explosively. In addition to our premium torch kits, we also offer an assortment of replacement torch tips, hoses, regulators, and other accessories. Maximum operating pressures are 15 psi for acetylene, 22 psi for other fuel gases, and 125 psi for oxygen. 7. They are used to prevent damage to equipment, but more importantly, to prevent personal injury. If un-checked it can continue through the torch into hoses, regulators and gas bottles/cylinders. Riviera Maritime Media Serving the information needs of the world’s maritime, offshore and energy industries for over 30 years BCGA CP7 - The Safe Use of Oxy-fuel Gas Equipment Cylinders, Gas Regulators, Gas Hoses, and Torches used for Oxy-Acetylene and Oxy-Propane welding, heating, and cutting. Jan 30, 2019 · With new standards for vessels with flammable cargoes, compliance is important to minimize the risk of fires and explosions. Non-compliant flashback arrestors identifiable only by attached stickers. The regulations about the use and maintenance of oxy-acetylene equipment were updated in late 2014 under The Acetylene Safety (England and Wales and Scotland) Regulations 2014 and included a new mandatory requirement to use suitable flashback arrestors. Acetylene Flashback Arrestor Sintered stainless steel flame trap quenches the flashback flame before it travels back further into the system causing damage and possible injury. CGA 510. This will further restrict gas flow and starve the tip. BAM certification body has certified the gas welding equipment – Safety devices and quick-action couplings to meet the requirements listed in:.

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Oxy Acetylene Flashback Arrestor Requirements. Use a cylinder’s contents only for purposes intended by the sup