The Murex Saffire 36+ Acetylene Flashback Arrestor is a safety device designed for installation in acetylene gas lines used with oxy-fuel welding and cutting equipment.
Flashback arrestors are designed to help protect gas hoses, regulators and upstream gas equipment from dangerous flame propagation and reverse gas flow. The device combines multiple safety functions to help reduce the risk associated with flashbacks, backfires and gas mixing.
The arrestor uses a flame-arresting element to quench a flame front travelling back through the gas line, while a non-return valve helps prevent reverse gas flow that could allow oxygen and fuel gas to mix within the system.
For professional oxy-fuel installations, flashback protection is an important safety component and should be selected according to the gas type, flow requirements, connection type and operating pressure of the equipment.
Key Features
- Brand: Murex
- Model: Saffire 36+
- Gas: Acetylene
- Heavy-duty flashback arrestor
- Designed for oxy-fuel welding and cutting systems
- Helps prevent reverse gas flow
- Helps stop flame propagation through the gas line
- Internal flame-arresting element
- Designed to provide additional protection against flashback
- Suitable for professional gas-welding installations
- Can be installed in the appropriate gas line or regulator arrangement
Safety Functions
Flame Arresting:
The internal flame-arresting element helps quench and stop a flame front travelling back through the gas system.
Non-Return Protection:
The integrated non-return valve helps prevent reverse gas flow and reduces the possibility of oxygen and fuel gas flowing backwards and mixing.
Thermal Protection:
A temperature-sensitive shut-off mechanism can interrupt gas flow when excessive heat associated with a sustained flashback reaches the safety device.
Pressure Protection:
Flashback arrestor systems can incorporate pressure-activated shut-off protection to respond to the pressure shock associated with a flashback. The Unitor W-66S documentation, for example, specifies pressure-activated and temperature-activated shut-off functions in addition to flame arresting and non-return protection.
Technical Specifications
- Brand: Murex
- Model: Saffire 36+
- Product Type: Flashback Arrestor
- Gas Type: Acetylene
- Application: Oxy-fuel welding and cutting
- Installation: Gas line / regulator-mounted application
- Safety Functions: Flame arresting, non-return and thermal protection
- Construction: Heavy-duty industrial safety component
Suitable For
- Oxy-acetylene welding
- Gas cutting systems
- Brazing equipment
- Welding workshops
- Metal fabrication
- Engineering workshops
- Industrial gas installations
- Automotive fabrication and repair
- General oxy-fuel equipment
Companion Oxygen Flashback Arrestor
For a complete oxygen/acetylene safety setup, the corresponding oxygen-side flashback arrestor should be selected separately according to the equipment requirements.
The Unitor W-66S is available in separate oxygen and acetylene versions. Wilhelmsen’s published specifications identify the W-66S acetylene version as product 183970 and the oxygen version as product 302976.
The Unitor W-66S range also incorporates a non-return valve, flame filter, temperature-activated cut-off and pressure-activated cut-off; the W-66S additionally includes a pressure-relief function.
Important Safety Information
Flashback arrestors are safety-critical components and must be correctly matched to the gas type, flow capacity, connection and operating conditions of the welding/cutting system.
Do not interchange oxygen and acetylene versions. Do not modify, disassemble or bypass the safety device. Installation, inspection and maintenance should follow the manufacturer’s instructions and applicable gas-welding safety requirements.
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