Sievert Promatic 3347 Soft Flame Burner – 28mm Cable Work & Heat Shrinking This little gem of a soft flame burner packs a real punch with its sweeping, powerful, soot-free & windproof yellow-and-blue flame - perfect for all sorts of cable work and heat shrinking tasks. It's got a clever fresh air inlet that keeps the burner head nice and cool to prevent you accidentally burning the shrink material. Specifically designed for use with thick-walled sleeves up to 50mm in diameter - and of course thin-walled sleeves too - this thing has got some serious oomph. With 5.9kW of power at 2 bar and a fuel consumption of 460g/h, you know you can trust it to get the job done. Oh, and it's got a nice compact head on it - a 28mm diameter that makes it just right for targeted heat delivery on sleeve applications. The 3347 is a bit of a dark horse in the