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Spare Parts
Made of Borosilicate 3.3 glass for use as control sight glasses in lubrication equipment, as well as observation ports in reel-type flow sight glasses for piping.
Tempered borosilicate cylinders, utilized in 360° view sight flow indicators, combine high chemical and thermal resistance with the strength needed for demanding industrial applications. Borosilicate glass, known for its low coefficient of thermal expansion, allows these cylinders to withstand temperature variations and aggressive chemicals without compromising integrity. The tempering process further enhances their durability, making them ideal for observing fluid dynamics in real time from any angle, a crucial feature for processes involving hazardous or high-temperature fluids. These indicators are indispensable in chemical processing, pharmaceuticals, and petrochemical industries, where continuous monitoring of fluid flow, color, and clarity is essential. The 360° visibility offered by these cylinders ensures comprehensive monitoring, facilitating improved process control and safety.
| Property | Testing method | Obtained value |
|---|---|---|
| Thermic dilatation coefficient | ISO 7991 | 3.3 × 10⁻⁶ |
| Density at 25°C | SN 7005 13 | 2.23 g/cm³ |
| Refractive index (λ = 587.6 nm) nd | — | 1.472 |
| Maximum annealing temperature | ISO 7884-8 | 1040 ºF |
| Short-term maximum temperature | ISO 7884-7 | 932 ºF |
| Thermal shock resistance | ISO 7884-4 | 5.67 ºF |
| Young's modulus | — | 63 150 MPa |
| Poisson constant | — | 0.2 |
| Thermal conductivity 20°C – 100°C λ | — | (1.2) (w·m⁻¹)(K⁻¹) |
| Photoelastic constant | DIN 52314 | (4.00 × 10⁻⁶) (mm²/N) |
| Specific electrical resistance 10⁸ Ωcm | DIN 52326 | 482 ºF |
| Dimensional tolerance diameter | DIN 7080 | PASS |
| Property | Testing method | Obtained value |
|---|---|---|
| Hydrolytic resistance | ISO 719 | HGB 1 |
| Acid resistance | ISO 1776 | CLASS S1 |
| Alkaline resistance | ISO 695 | CLASS 2 |
| Chemical composition SiO₂ | — | Minimum content 80% |
| Chemical composition B₂O₃ | — | Minimum content 13% |
| Chemical composition Na₂O + K₂O | — | Minimum content 4.5% |
We invite you to visit /contact for more information about our wide range of products. Whether you require specific details or personalized assistance, our team is here to help. We are committed to providing you with the highest quality solutions and expert guidance tailored to your needs. See the Gulf Coast Glass catalog for detailed specifications and product offerings.
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Contact us with your application details — pressure, media, and connections — and we will help you specify the right sight glass.