Catalog
Circular Sight Glass — Tempered Soda Lime DIN 8902
Our tempered soda lime sight glasses are designed for durability and impact resistance and are widely used in less extreme industrial environments.After undergoing a specialized tempering process, soda lime glass’s strength and resistance to physical shock are greatly increased making it a cost-effective option for general applications.
These glasses are particularly valued for their clarity and versatility as a more economical option for various applications including water treatment, low-pressure vessels and environmental monitoring equipment. Their circular shape allows for easy installation and observation, supporting safe and efficient process monitoring.
While not as resistant to high temperature and chemical exposure as borosilicate or quartz glass , tempered soda lime glass offers a reliable and affordable solution for a broad range of industrial needs.
Specifications
| Glass Type | Soda Lime |
|---|---|
| Maximum Diameter | 350mm |
| Minimum Thickness | 5mm |
| Maximum Thickness | 25mm |
| Transformation temp | 525°C (977°F) (ISO 7884-8) |
| Thermal shock resistance | 50°C (122°F) (ISO 7884) |
| Max working pressure | Refer to table below |
| Expansion Coefficient | 9.17 x 10-6K-1 |
| Hydrolytic Class | Class 4 |
TOLERANCES
| TOLERANCES |
|---|
| DIAMETER (d) |
Specifications
| 10 ≤ t ≤ 20mm | 20mm < t |
|---|---|
| + 0.5mm - 0.25mm | + 0.8mm - 0.4mm |
Circular Sight Glass. Tempered Soda Lime. DIN8902
Pressure resistance for tempered soda lime glass is determined by several factors including the overall diameter of the glass, the visible (or unsupported) diameter of the glass and the thickness of the glass. Refer to the chart below for some commonly used sizes and their respective maximum recommended pressure ratings.
Circular Sight Glass. Tempered Soda Lime. DIN8902
| d1 | Total glass diameter |
|---|---|
| d2 | Visible glass diameter |
| ρ | Pressure in BAR |
| δ | Safety factor (5 recommended) |
| σ | Surface compressive stress (70N/mm2) |
