Flame Arresters
A flame arrester (flashback arrester) is a safety device fitted on flammable gas or oxygen lines in welding and cutting systems that stops flashback and reverse gas flow, protecting cylinders and lines.
It is used on oxy-acetylene, propane and other flammable gas welding-cutting systems, manifolds and line outlets. The product range includes G1/2″ models for flammable gas and oxygen.
Main Applications
- Oxy-acetylene welding systems
- Propane and LPG cutting lines
- Gas manifolds
- Cylinder outlets
- Workshop gas lines
Technical Data
| Type | Flame (flashback) arrester |
|---|---|
| Gas types | Separate models for fuel gas and oxygen (product range) |
| Connection | G1/2″ (product name) |
| Functions | Flame stop, reverse flow prevention (depending on model) |
| Mounting | Regulator outlet or in line (depending on model) |
| Body | Brass (depending on model) |
| Pressure and flow | Depending on model |
| Standard | Depending on model (e.g. EN ISO 5175) |
Material Options
| Part | Fuel gas type | Oxygen type |
|---|---|---|
| Gas | Acetylene, propane, natural gas | Oxygen |
| Thread hand | Usually left (depending on model) | Usually right (depending on model) |
| Colour code | Red (depending on model) | Blue (depending on model) |
| Mounting | Fuel gas line | Oxygen line |
Which material? Separate flame arresters must be used for fuel gas and oxygen and never interchanged; an arrester that has experienced flashback must not be reused without inspection. Values are confirmed per model.
Advantages
Flashback Protection
- Protects cylinder and line
Reverse Flow Prevention
- Stops gas mixing
Compact
- At the regulator outlet
Two Types
- Fuel gas and oxygen
Construction and Design Features
- Sintered flame arresting element
- Check valve (depending on model)
- Brass body
- Inlet and outlet unions
Send the gas type, connection size and mounting place; we will confirm a suitable flame arrester from stock.
How to Choose?
- Gas typeChoose the right type for fuel gas or oxygen.
- ConnectionDetermine G1/2″ or other connection size.
- Flow and pressureCheck line working pressure.
- Mounting placeDecide regulator outlet or torch side.
Complementary Products
Why ORFA?
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Details →Our Flame Arresters
ORFA supplies flame arresters in a range of pressure classes, sizes and connection types to suit your application. Descriptions, technical specifications, materials and dimension tables are available on each detail page.
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