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FLARE SYSTEMS-Birwelco expertise

Now recognised as a world leader, the Sonajet design was first developed and by UnitBirwelco in the 1970’s to meet the requirements for low radiation flaring on North Sea installations.

The Sonajet combines the advantages of high pressure sonic flaring with long life to provide guaranteed ignition under all conditions.

The Sonajet design solution eradicates the need for annual tip change-outs and associated downtime costs – all of which makes it the most effective solution on the market. In addition, its design is extremely flexible and can be tailored to meet virtually any requirement.

A proportion of the high pressure gas is throttled and expanded to produce a low velocity gas stream, which produces a stable flame. The low pressure flame ensures a continuous ignition source for the remaining high pressure gas exiting the tip, even under maximum flow and blow-down conditions. As a result, flame lift and blow out are avoided.


UB Flares


Spares support available beyond project completion

Total reliability with flare Ignition systems

Ultimate in Flare Ignition System Reliability

Proven, safe pilot monitoring in all atmospheres. 

Backup skids and control systems to ensure operation.

Reliable, sturdy support structures, stacks or derricks. 


Birwelco, Trinity Point, Halesowen, Birmingham, B63 3HY



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