Flame Arrestors
Unyazi supplies flame arrestors designed to prevent flames from travelling through piping, vents and storage systems.
These safety devices allow gases and vapours to pass through while stopping a flame front from spreading further into the system. They are commonly used in facilities that process, store or transport flammable materials. Each flame arrestor is selected according to the gas or vapour, pipe size, flow conditions and position within the system.
How Flame Arrestors Work?
A flame arrestor contains an internal element with narrow channels that absorb heat from a passing flame. As the flame enters the arrestor, the internal element cools it below the temperature needed for continued combustion. This prevents the flame from moving further through the pipework or into connected equipment.
The arrestor must still allow normal process flow, which makes correct sizing and placement important for both safety and system performance.
Key Benefits
Limits Flame Spread
Flame arrestors help stop an ignition from travelling through connected piping or storage systems. This can prevent a local incident from spreading to other areas of the facility.
Protects People and Equipment
Containing a flame helps reduce the risk of damage to tanks, vessels, pipelines and nearby equipment. It also supports safer working conditions.
Supports Normal Process Flow
The internal element is designed to allow gases and vapours to continue moving through the system. Correct sizing helps limit unnecessary pressure loss.
Suitable for Flammable Media
Flame arrestors can be selected for different gases, vapours and process conditions. The chosen design must match the properties of the media being handled.
Different Installation Options
Units can be supplied for installation at vent openings or within pipework. The correct option depends on where ignition may occur and how the system is arranged.
Supports Safety Compliance
Inspection records, maintenance reports and technical documents can support site safety procedures and compliance requirements.
End-of-Line Flame Arrestors
End-of-line flame arrestors are installed at the open end of a vent or pipe. They are commonly used on storage tank vents where flammable vapours may be released into the surrounding atmosphere.
In-Line Flame Arrestors
In-line flame arrestors are installed within a closed piping system. They are used where a flame could travel through the pipework towards a tank, vessel or other process equipment.
Deflagration and Detonation Arrestors
Different designs may be required depending on the speed and pressure of the flame event. The correct arrestor must be selected according to the expected combustion conditions, system layout and distance from the possible ignition source.
Where Flame Arrestors are Used?
Flame arrestors are installed in systems where flammable gases or vapours may be present. Their placement should be based on a clear understanding of possible ignition points and the direction in which a flame could travel.
Fuel storage tanksChemical storage systemsProcess ventsVapour recovery linesOil and gas facilitiesPetrochemical plantsSolvent handling systemsFlammable gas pipelines
Selecting the correct
Flame Arrestor
Selecting a flame arrestor requires more than matching the connection size.
Unyazi considers the gas or vapour group, pipe diameter, flow rate, operating pressure and temperature. The possible ignition location, pipe length and expected flame conditions must also be assessed. The internal element and body materials should be compatible with the process media and surrounding environment. Correct selection helps provide effective flame protection without creating excessive pressure loss.
Installation and Ongoing Support
Flame arrestors require regular inspection and cleaning to remain effective. The internal element can become blocked by dirt, corrosion or process build-up. This may restrict flow and reduce the arrestor’s ability to absorb heat during a flame event.
Unyazi can assist with inspection, cleaning guidance, maintenance and replacement planning. Technical and service records can also be provided to support maintenance programmes and safety checks.
Connect with us for excellence in
Valve and Automation Solutions