DIN 11851 MV Screwed Sight Glass

The DIN 11851 MV Screwed Sight Glass is a hygienic weld-on assembly engineered for process visibility in sanitary and aseptic applications. Featuring a screwed cover flange and precision-machined sealing surfaces, this unit delivers dependable viewing access into bioreactors, laboratory mixers, filtration systems, process vessels, separators, pipelines, and other closed equipment.

Designed to meet the stringent requirements of pharmaceutical, biotech, food and beverage environments—such as dairies and breweries—the DIN 11851 MV provides robust mechanical integrity, cleanability, and long service life.

Key Features

• DIN 11851-style construction: Suitable for welding into or onto vessel walls.
• Complete assembly: Supplied with sight glass disc, gaskets, and slotted cover nut.
• Nominal sizes: DN 50 to DN 150.
• Viewing diameter: 50–150 mm.
• Operating temperature: Up to 200 °C (higher ratings available on request).
• Pressure capability: Up to 6 bar (higher ratings available on request).
• Materials: Stainless steels and special alloys for sanitary and corrosive environments.
• Custom-built options: Tailored materials, geometries, and seals available on request.

Typical Applications

• Bioreactors and fermentation vessels
• Laboratory and pilot-scale mixers
• Filtration and separation equipment
• Pharmaceutical processing
• Food and beverage production
• Hygienic pipelines and closed-loop systems

Built for sanitary service and engineered for durability, the DIN 11851 MV Screwed Sight Glass delivers reliable, hygienic viewing access in demanding processing environments.

Technical Specifications: