Lumistar sintered with scraper sight glasses 73.SW

Lumistar sintered with scraper sight glasses 73.SW

The Lumistar 73.SW is a sintered borosilicate sight glass with an integrated central wiper, engineered for continuous cleaning and maximum viewing in processes prone to fouling. Available in multiple ring alloys with certificates and datasheets on request.

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Description

The Lumistar 73.SW is a sintered, glass-to-metal sight glass equipped with a centrally operated scraper (wiper) to prevent crystallisation and remove dust or deposits from the viewing surface. The wiper shaft is mounted through the sightglass disc so the glass can be kept clean during operation without dismantling. The robust sintered construction provides high mechanical strength and reliable sealing for hygienic and industrial process applications.

Why choose a Lumistar sintered with scraper sight glasses 73.SW?

The 73.SW combines the mechanical strength and safety of a fused glass-to-metal sight window with an integrated, centrally-operated scraper to keep the viewing surface clean during operation. It’s ideal for processes prone to crystallisation, deposits or dust because the wiper removes build-up without dismantling the assembly, reducing downtime and maintenance. Designed for hygienic and industrial use, the 73.SW offers flush viewing, CIP-compatibility, multiple alloy options for corrosion resistance, and documented batch testing and material certificates on request — making it a reliable, low-maintenance sighting solution for food, chemical, pharmaceutical and detergent processes.

Product at a glance

  • Standard: Lumistar sintered with scraper sight glasses 73.SW
  • Window: Sintered borosilicate glass (porous structure), custom porosity on request.
  • Body: Stainless steel 304 / 316 housings; special alloys on request.
  • Mounting: Flanged, weld-on or cartridge styles.

Typical specifications

 

Sintered Sight Glass — Specifications

Type Lumistar sintered with scraper sight glasses 73.SW
Window material Sintered borosilicate glass
Body material Stainless steel 304 / 316
Max.operating temperature 150°C
Pressure
  • PN10 to PN16, higher pressure ranges possible
Material certificates Certificate of conformity to EN 10204-3.1B or 3.1A
Technical data of Lumistar sight glasses:
  • Test base: DGRL97/23/EG,AD 2000 standards.
  • Materials to Vd specifications and the respective DIN/EN standards.
  • Sight glass fused to metal conforming to DIN 7079
  • Borosilicate glass to DIN 7080
  • Wiper blades silicon rubber, PTFE, and othersAll productcontact parts are of stainless steelrings – VITON
Ring materials  

  • Duplex Stainless Steel (1.4462)
  • Hastelloy C-22 (2.4602)
  • Hastelloy C-4 (2.4610)
  • Alloy59（2.4605）
  • Carbon Steel（1.0570）

Need a custom porosity or diameter? Contact us for a quote.

Features & benefits

  • Security against total failure through fused glass-to-metal design.

  • Simple installation and replacement.

  • Built-in scraper keeps the viewing area clear without disassembly.

  • Can be combined with sight glass luminaires or lighting.

  • Long operating life with low maintenance.

Applications

  • For use on sightglass assemblies (e.g. DIN 28120 for DN 50–200, DIN 11851 for DN 65–125) or similar fittings.

  • Typical applications: pipelines, vessels, reactors and process lines where product build-up or crystallisation can obstruct viewing — common in food, chemical, pharmaceutical and detergent processes.

Downloads

Lumistar sintered with scraper sight glasses 73.SW — Datasheet (PDF):Lumistar sintered with scraper sight glasses 73.SW

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