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Wohler Rotary Viper

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The Rotary Viper is suitable for cleaning ventilation ducts & air ducts up to 250 mm diameter and flue outlet pipes between 80 mm to 150 mm diameter. A mains powered or rechargeable-battery powered drill is used to rotate the threaded cleaning attachments (brush heads and impact brushes).

Note - the scope of supply does not include a mains powered or rechargeable-battery powered drill.

The Rotary Viper is available with a number of shaft and brush options. The 1.5 m, 3 m, 5 m and 10 m options include a single 18 cm diamter brush head perlon and the 5 m vent set includes 18 & 25 cm brush head perlons and a 30 cm diameter threaded brush perlon. Please contact the Instrument Solutions sales team with the configuration required for pricing. 

Product Features

  • 5 model types
  • Range of accessories
  • Document downloads

Instrument product options

1. Select a model (5 available)

Continue to select accessories

2. Select accessories

3. Select a calibration




  • Clockwise / anti-clockwise rotation
  • Applicable for small duct bends
  • Lightweight design
  • Extremely flexible shaft
  • Can be operated with a mains powerd or battery powered drill

The Wohler Rotary Viper system is available with in range of lengths and with several brush sizes, please contact a member of the BSRIA sales team for more details.


Length      1.5m, 3m, 5m, 10m and 15m

Maximum torque      clockwise rotation 3 Nm (2.2 ft lb), anti-clockwise rotation 1.5 Nm (1.1 ft lb)

Failure torque      clockwise rotation 9 Nm (6.6 ft lb), anti-clockwise rotation 4.5 Nm (3.3 ft lb)

Maximum speed      clockwise rotation 1300 rpm, anti-clockwise rotation 650 rpm

Smallest bend radius      120 mm

Coating material      Polyacrylate (PA)

Shaft diameter      12 mm

Connection for cleaning attachments      M10 thread

Operating temperature      0 oC to + 80 oC



Wohler Rotary Viper user manual

  • Technical Document
  • PDF file
  • 287 KB
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