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Flashback Arrestors

Protect your welding setup with our range of flashback arrestors, designed to prevent dangerous reverse gas flow and flame propagation. Available for oxygen, acetylene, propane, and other gases. Free delivery on orders over £100 to mainland UK.

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  1. Hi-LO Hilo Ds200 Oxygen Resettable Fba Hl070311
    In Stock In stock

    Hi-LO Hilo Ds200 Oxygen Resettable Fba Hl070311

    SKU: H01/HL070311
    £98.99 £82.49
    - +
  2. Hi-LO Hilo Ds200 Fuel Gas Resettable Fba 070312
    In Stock In stock

    Hi-LO Hilo Ds200 Fuel Gas Resettable Fba 070312

    SKU: H01/HL070312
    £98.98 £82.48
    - +
  3. Hi-LO Hi-Lo Dg Flashback Arrestor Oxygen 070321
    In Stock In stock

    Hi-LO Hi-Lo Dg Flashback Arrestor Oxygen 070321

    SKU: H01/HL070301
    £19.56 £16.30
    - +
  4. Hi-LO Hi-Lo Dg Flashback Arrestor Fuel Gas 070322
    In Stock In stock

    Hi-LO Hi-Lo Dg Flashback Arrestor Fuel Gas 070322

    SKU: H01/HL070302
    £19.56 £16.30
    - +

Flashback arrestors are essential safety devices that prevent dangerous reverse gas flow and flame propagation in welding and cutting systems. When a flashback occurs—caused by incorrect pressure settings, blocked nozzles, or overheating—these arrestors instantly stop the flame from traveling back through the hose to the gas cylinder, protecting both equipment and operators from potentially catastrophic damage.

Our range includes both regulator-mounted and torch-mounted models for oxygen, acetylene, propane, and other fuel gases. Regulator-mounted arrestors install directly at the cylinder outlet, providing the first line of defence, while torch-mounted units offer additional protection at the point of use. Many professional welders install arrestors at both locations for maximum safety. All units feature non-return valves, sintered flame filters, and thermal cut-off mechanisms that activate at critical temperatures.

Flashback arrestors require regular inspection and replacement according to manufacturer guidelines and workplace safety regulations. Check valves and filters periodically for damage or contamination, and replace arrestors if they've been subjected to a flashback event. Free delivery available on orders over £100 to mainland UK addresses.

Frequently Asked Questions
How does flashback arrestor work?
A flashback arrestor prevents flames from travelling back into gas supply lines. It contains a flame trap and a non-return valve. If a flashback occurs, the flame is extinguished by the trap, while the valve stops gas from flowing back, ensuring safety.
How many flashback arrestors in a gas cutting set?
In a typical gas cutting set, you should have two flashback arrestors: one for the oxygen line and one for the acetylene line. These devices are essential for preventing dangerous flashbacks and ensuring safe operation during cutting tasks.
How much are stick welders?
Stick welders in the UK typically range from £100 to £1,500, depending on the brand, features, and power output. Entry-level models are more affordable, while professional-grade machines offer advanced capabilities and durability.
How often should flashback arrestors be replaced?
Flashback arrestors should be replaced at least every 12 months, or sooner if they show signs of damage or after any incident involving a flashback. Regular checks are essential to ensure safety and compliance with regulations. Always follow manufacturer guidelines.
How to use flashback arrestor?
To use a flashback arrestor, connect it securely to the gas cylinder and the regulator. Ensure the flow direction is correct, indicated by arrows. Regularly check for leaks using soapy water. Always follow safety guidelines and manufacturer instructions for optimal protection.
What are flashback arrestors?
Flashback arrestors are safety devices used in welding and cutting processes to prevent flames from travelling back into gas supply hoses. They contain a flame trap and a non-return valve, ensuring that any flashback is contained, enhancing safety during operations.
What is a flashback in welding?
A flashback in welding occurs when the flame travels back into the torch or gas supply line, potentially causing a dangerous situation. It can result from improper gas flow, faulty equipment, or incorrect usage. Proper maintenance and safety measures are essential to prevent it.
Where does the flashback arrestor go in a gas cutting set?
In a gas cutting set, the flashback arrestor should be installed on the torch and the gas supply line. This ensures that any flashback is contained before it can travel back into the gas cylinder, providing essential safety during cutting operations.
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