• SW2 Wiper

SW2 Wiper

  • Product Code: SW2 Wiper

SW II BW Flexible-Drive Wiper – Manual Internal Cleaning for Circular Sight Ports

The Lumiglas SW II BW Wiper is engineered for manually activated cleaning of the inside face of sight glass discs, ensuring uninterrupted visibility in demanding process environments. Its flexible-drive design makes it ideal for applications where process residues, condensation, or product film degrade visibility inside sight ports.

Purpose-built for pressure and vacuum vessels requiring test certification, the SW II BW delivers reliable performance in both explosion hazardous (Ex) and non-hazardous operating areas, making it a versatile cleaning solution across multiple industries.

Key Features

  • Designed for circular sight glass assemblies to DIN 28120 or similar standards
  • Flexible-drive mechanism enables smooth, controlled manual cleaning
  • Suitable for pressure and vacuum vessels requiring certified safety compliance
  • Approved for both Ex (explosion hazardous) and non-Ex environments
  • Enables cleaning without removing or dismantling the sight glass assembly
  • Maintains visibility in processes prone to interior fouling, coatings, or condensation

Typical Applications

  • Chemical, pharmaceutical, and biotech processing
  • Food and beverage production lines
  • Mixers, reactors, fermenters, and stirred vessels
  • Pressure and vacuum tanks requiring certified inspection openings
  • Industrial pipelines and flow sight ports

The SW II BW Wiper provides a robust, operator-controlled method for keeping internal sight glass surfaces clean—ensuring safe, clear and continuous process observation across even the most demanding installations.

Technical Specifications:


Tags: flexible drive sight-glass wiper, SW2 sight-glass wiper, manual sight-glass wiper DIN 28120, circular sight-glass wiper for pressurised vessel, ATEX sight-glass wiper, John Moncrieff SW2 wiper, vessel viewport cleaning wiper