Round DIN 28120 Sight Glass Fitting (Unpressurized Series)
Discover Lumiglas round DIN 28120 weld-on sight glass fittings. Engineered for unpressurized tanks, with standard high-pressure PN10/PN16 models also available.
Description
Round DIN 28120 Sight Glass Fitting (Unpressurized Series)
While this specific page features our cost-effective unpressurized series, Lumiglas also manufactures full-spec DIN 28120 Sight Glasses rated for PN 10 and PN 16. Contact our engineering team for high-pressure applications.
Visual inspection serves as a critical safety requirement for industrial storage and processing. Historically, engineers have relied on the global DIN 28120 sight glass standard to monitor fluids inside heavy-duty pressure vessels. However, many industrial tanks operate at standard atmospheric pressure.
Therefore, Lumiglas engineered this specific weld-on sight glass fitting. It provides the exact dimensional footprint and proven welding profile of a standard DIN 28120 fitting, but we optimized it specifically for unpressurized tanks. As a result, plant managers can significantly reduce procurement costs without sacrificing optical clarity or robust stainless steel construction.
| Feature | Specification Details |
|---|---|
| Design Standard | Based on DIN 28120 dimensions (Round weld-on type) |
| Operating Pressure | Unpressurized / Atmospheric (PN10/PN16 versions available separately) |
| Operating Temperature | Up to 280°C (with Borosilicate glass) / Up to 150°C (with Soda-lime) |
| Flange Materials | Stainless Steel 316L (1.4404), 304 (1.4301), or Carbon Steel |
| Glass Disc Material | Toughened Borosilicate Glass (DIN 7080) or Soda-Lime Glass (DIN 8902) |
| Nominal Sizes | DN 50, DN 80, DN 100, DN 125, DN 150, DN 200 |
Core Industrial Applications
Because we designed this specific unit for atmospheric conditions, various bulk handling and storage sectors widely utilize it:
- Food & Beverage: Atmospheric storage tanks, silos, and mixing vats.
- Water Treatment: Open-top clarifiers and non-pressurized filtration vessels.
- Agriculture & Bulk Solids: Dry material hoppers and large dust collection bins.
- General Chemical: Low-pressure dosing tanks and fluid containment reservoirs.
Why Choose This Specific Fitting?
Why should an engineer select an unpressurized DIN 28120 fitting over standard models? First, it significantly reduces procurement costs. By eliminating the heavy-duty flange thicknesses required for 16-bar pressure systems, we lower the material cost. Secondly, it retains the exact weld-on profile of the standard DIN 28120. Consequently, installers and welders do not need to learn any new fabrication techniques.
Ultimately, this Lumiglas round sight glass delivers high-end optical clarity, offers hygienic stainless steel options, and ensures total safety for atmospheric processes. For exact dimensions and installation schematics, please download our Technical Data PDF.
