Oxygen Flashback Arrestor for High Pressure Cylinders — protection fitted directly at the cylinder regulator
An Oxygen Flashback Arrestor for high pressure cylinders from REAL GAZ stops a flame front travelling back from the torch into the regulator, hose and cylinder valve. It combines a non-return valve, a flame-quenching element and, on many models, a temperature- or pressure-sensitive cut-off.
Units are selected for full cylinder pressures of 150 to 300 bar at the inlet and are cleaned for oxygen service before packing.
Units are selected for full cylinder pressures of 150 to 300 bar at the inlet and are cleaned for oxygen service before packing.
Designs follow EN ISO 5175-1 for flashback protection, with oxygen-compatible materials assessed against EN ISO 15001 and cylinder connections matched to EN ISO 10297 valve outlets, suitable for workshop and site use.
A full 50-litre cylinder charged to 200 bar holds a large energy reserve, so the arrestor must tolerate sudden pressurisation when the cylinder valve is opened. We therefore advise opening the valve slowly with the regulator adjusting screw released. Typical inlet connections follow national cylinder valve standards, while outlet threads suit the regulator and hose used. If you operate cylinder bundles or racks, tell us the number of cylinders so that we can check the flow capacity. Our staff can also advise on colour-coded hoses and on the safe separation of oxygen from fuel gas cylinders in storage.
🏭 Where High-Pressure Oxygen Arrestors Are Used
- ⚙️ Oxy-fuel cutting — protects regulators on 50-litre oxygen cylinders feeding heavy plate-cutting torches;
- 🔬 Brazing and soldering — guards the cylinder outlet when small torches are shut off quickly under pressure;
- 🔧 Shipyard and steel fabrication — used on cylinder bundles where long hose runs raise the risk of back-fire;
- 🚀 Maintenance crews — fitted to mobile cylinder trolleys moved between plant areas each shift.
💡 Why Choose REAL GAZ
- ✅ Rated for cylinder pressure — the inlet rating is stated so it is never exceeded at a full cylinder;
- 🧪 Oxygen-clean assembly — degreased components and sealed bags prevent hydrocarbon contamination;
- 🎯 Correct thread match — outlet and inlet fittings are specified to suit your regulator and hose;
- 🔒 Cut-off function — thermal or pressure-sensitive shut-off closes the gas path after a flashback;
- 📄 Certificate of Analysis (CoA) — supplied with every order.
🔬 Quality Control & Safety
- pressure testing at the stated working pressure;
- visual and particulate cleanliness inspection;
- flow-rate and non-return valve function checks;
- leak testing of every threaded joint.
Cylinders and gas equipment comply with ADR / UN transport rules and relevant EN/ISO standards.
📦 Fitting and Handling
- fit the arrestor between regulator and hose, never between hose and torch only;
- keep threads and seats free from oil, grease and PTFE tape debris;
- replace any unit that has tripped, been dropped or been exposed to a fire;
- record the inspection date on a tag and test the non-return valve at regular intervals.
⚙️ Trusted Gas Solutions
REAL GAZ supplies every oxygen flashback arrestor for high pressure cylinders to fabricators, shipyards and maintenance contractors in Azerbaijan, Turkey, Georgia, Uzbekistan and the USA, together with matching regulators, hoses and cylinders.
REAL GAZ — a safe flame stays at the torch.