The biggest soft flame burner in the Sievert Promatic range for dealing with heat shrink sleeves over 150mm in diameter - these are the largest ones you're going to need for major cable work. No soot, no mess - the flame is a lovely sweeping yellow-and-blue that you can see dead clear even in daylight. And it's windproof too, so you can work outside without worrying about the flame getting blown out. Plus, the fresh air inlet makes sure the burner head stays nice and cool - no burning or charring the sleeve material for you. 26kW, 2000g/h, 50mm is the spec - and the optimum working pressure is 1.5 bar, which is the same as the 334191. And the handle sold separately, by the way - you'll need the Sievert 3366 Promatic one.
This is the 334891, the final piece in the Sievert Promatic soft flame burner set - the big 50mm head for the really large heat shrink sleeves. You're talking major cable infrastructure jointing work here, where you need those big heavy-duty sleeves that can handle the high power needed to shrink them down. The 26kW output and 2000g/h consumption give you the power needed for the job, but the fresh air inlet keeps things cool - the same principle as the 3347 and 334191, actually, to stop all that sleeve material from burning or charring.
According to Sievert themselves, the optimum working pressure is 1.5 bar - which is just the same as the 334191. And the 60° neck tube angle is the same as the other soft flame burners in the series - designed specifically for working with those sleeves flat on their sides
Key Features & Benefits
For Sleeves Over 150mm Diameter — The correct burner for the largest heat shrink sleeves used in major cable infrastructure and high-voltage jointing.
Sweeping Soot-Free Windproof Flame — Yellow-and-blue, clearly visible in daylight — soot-free for clean application on cable sheathing.
Fresh Air Inlet — Cool Burner Head — Prevents burning or charring the shrink material at the burner contact point.
26kW Output — High power for efficient shrinking of large-diameter, heavy-duty sleeves.
Optimum Working Pressure 1.5 Bar — Sievert specify 1.5 bar as the optimum for this burner.
50mm Burner Diameter — The widest soft flame burner head in the Promatic range for maximum sleeve coverage per pass.
60° Neck Tube Angle — Designed for horizontal sleeve work.
Twist 'N' Lock Fitting — Instant, tool-free connection to the Sievert 3366 Promatic handle.
Ideal For
Heat shrink sleeves over 150mm diameter
Major cable infrastructure jointing
High-voltage cable jointing & splicing
Large-diameter pipeline heat shrinking
Sievert Promatic 3366 handle owners working with large sleeves
The largest Promatic soft flame burner — for sleeves over 150mm. See also: 334191 (38mm) for 50–150mm sleeves and 3347 (28mm) for sleeves to 50mm.
