NIPPON CUTTING & WELDING EQUIPMENT CO., LTD.
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Flashback Arrestor for Regulator ｜ Prevents Flashback and Enhances Safety in Industrial Gas Systems
Key Takeaways
• The Flashback Arrestor for Regulator stops flashback before it reaches the regulator and gas cylinder
• Reduces the risk of severe accidents caused by backfire and reverse pressure
• Integrates multiple safety mechanisms into a single device
• Available models for Oxygen, Acetylene, LPG, and Hydrogen
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In gas welding and cutting operations, one of the most serious hazards is backfire, where the flame travels backward from the torch into the gas hose, regulator, and gas cylinder. This can be caused by pressure imbalance, torch tip blockage, or improper flame adjustment. Without protection at the upstream side, damage can escalate rapidly and become difficult to control.
The Flashback Arrestor for Regulator is designed to stop this hazardous chain reaction directly at the gas supply point. The device activates immediately when flashback or abnormal pressure occurs, protecting operators, equipment, and the overall gas system.
Each Flashback Arrestor integrates multiple safety mechanisms working together, including:
• Flame Arresting Element (Sintered Filter) to absorb heat and extinguish the flame
• Check Valve to prevent reverse gas flow
• Thermal / Pressure Cut-off that shuts off gas flow when abnormal temperature or pressure is detected
• Reset Mechanism (on selected models) allowing the device to be reset after a flashback event
This structure enables protection against both flashback and reverse pressure within a single device, effectively reducing risk to the regulator and gas cylinders.
🔷 Flashback Arrestor for Regulator – Model Details
• FA-210 O
Gas: Oxygen
Maximum working pressure: 0.99 MPa
Diameter: 8 mm
Sizes: 78 × φ29 mm
Weight: 250 g
• FA-210 A
Gas: Acetylene
Maximum working pressure: 0.1 MPa
Diameter: 8 mm
Sizes: 78 × φ29 mm
Weight: 240 g
• FA-210 P
Gas: LPG
Maximum working pressure: 0.1 MPa
Diameter: 8 mm
Sizes: 78 × φ29 mm
Weight: 240 g
• FA-220 H
Gas: Hydrogen
Maximum working pressure: 0.15 MPa
Diameter: 8 mm
Sizes: 78 × φ29 mm
Weight: 250 g
This device is suitable for Oxy-Fuel welding and cutting systems, fabrication and maintenance work, on-site welding operations, and heavy industrial facilities that require higher gas safety standards. Installing a Flashback Arrestor at the regulator helps reduce risk from the source and ensures long-term safety and reliability of welding and cutting operations.
Summary
The Flashback Arrestor for Regulator is an essential safety device for all gas welding and cutting systems. Selecting the correct model according to gas type and operating pressure effectively protects operators, equipment, and facilities from serious accidents.
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❓ FAQ
Q: Where should a Flashback Arrestor be installed?
A: It is recommended to install it at the regulator to prevent flashback from the gas source.
Q: Which systems require a Flashback Arrestor?
A: It is especially essential for systems using Acetylene, Hydrogen, and continuous welding or cutting operations.
Q: What does a Flashback Arrestor protect against?
A: It prevents flashback and reverse pressure before they reach the regulator and gas cylinder.
📚 Glossary (Key Terms)
Backfire: A condition where the flame travels backward from the torch into the gas system
Regulator: A device used to control gas pressure in welding and cutting systems
Flame Arresting Element: A component that absorbs heat and extinguishes the flame
Check Valve: A valve that prevents reverse gas flow
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Industrial gas pressure regulator / Gas cutting equipment
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With 36 years of experience in Thailand, NIPPON CUTTING & WELDING EQUIPMENT CO., LTD. has continued to manufacture related equipment based on gas cutting technology. In recent years, in addition to pl ...
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