Product Overview
Borosilicate transparent gauge glass is a strip-type sight glass used to observe liquid level clearly in boilers, instruments, and industrial piping. It is commonly selected where high transparency, thermal resistance, and chemical durability are required.
This borosilicate transparent gauge glass is designed for direct visual reading of liquid level in industrial equipment. Transparent gauge glass is manufactured into strip shape and used in boilers and instruments, and that borosilicate glass is used because it performs well in aggressive environments such as high temperature, high pressure, acid, and alkali service.
Also called transparent sight glass, transparent level glass, or transparent level gauge, this product is typically made from borosilicate glass and supplied in strip form for level-reading applications.
Common search terms and aliases
- borosilicate transparent gauge glass
- transparent gauge glass
- transparent sight glass
- transparent level gauge
- strip gauge glass
- boiler sight glass for liquid level observation
Applications
Borosilicate transparent gauge glass is widely used in boilers, instruments, chemical systems, industry pipes, petroleum-related equipment, and medicine-related industrial applications where the liquid level needs to be seen directly.
Typical application scenarios
- boiler liquid level observation
- industrial instrument level indication
- chemical and process piping
- high-temperature liquid level reading
- high-pressure level gauge assemblies
- corrosive media observation areas
Material and Performance Characteristics
The product is made from borosilicate glass, a technical glass family known for high chemical durability and low thermal expansion. SCHOTT’s technical glass documentation notes that non-alkaline-earth borosilicate glass typically contains 12–13% B2O3 and over 80% SiO2, with low thermal expansion and strong suitability for technical applications requiring thermal resistance, chemical durability, and high light transmission.
Why borosilicate is used here
- good transparency for level reading
- suitable for aggressive media
- stable technical-glass performance
- appropriate for industrial observation windows and strip gauge glass formats
Main Benefits
- High transparency for direct visual reading of liquid level.
- Corrosion resistance for acid and alkali service conditions.
- High temperature and pressure capability within product range.
- Strip form for gauge applications, matching standard level gauge construction.
- Optional gasket and mica sheet supply for complete gauge glass installation packages.
Technical Specifications
| Item | Specification |
|---|---|
| Product Name | Borosilicate Transparent Gauge Glass |
| Common Names | Transparent gauge glass, transparent sight glass, transparent level glass, transparent level gauge |
| Material | Borosilicate glass |
| Form | Strip |
| Standard Types | TYPE A / TYPE B / TYPE H / TYPE TA 28 |
| Length Range | 70–500 mm |
| Width Range | 20–40 mm |
| Thickness Range | 10–30 mm |
| Max Pressure | 400 bar |
| Max Temperature | 800 °C |
| Accessories | Gasket and mica sheet can be supplied together |
| Customization | According to customer requirements |
Common sizes
| Type | Common Size |
|---|---|
| TYPE A | 30 × 17 mm |
| TYPE B | 34 × 17 mm |
| TYPE H | 34 × 22 mm |
| TYPE TA 28 | 27.6 × 16.8 mm |
| TGG-0 | 95 × 30 × 17 mm / 95 × 34 × 17 mm |
| TGG-1 | 115 × 30 × 17 mm / 115 × 34 × 17 mm / 115 × 34 × 22 mm |
| TGG-2 | 140 × 30 × 17 mm / 140 × 34 × 17 mm / 140 × 34 × 22 mm |
| TGG-3 | 165 × 30 × 17 mm / 165 × 34 × 17 mm / 165 × 34 × 22 mm |
| TGG-4 | 190 × 30 × 17 mm / 190 × 34 × 17 mm / 190 × 34 × 22 mm |
| TGG-5 | 220 × 30 × 17 mm / 220 × 34 × 17 mm / 220 × 34 × 22 mm |
| TGG-6 | 250 × 30 × 17 mm / 250 × 34 × 17 mm / 250 × 34 × 22 mm |
| TGG-7 | 280 × 30 × 17 mm / 280 × 34 × 17 mm / 280 × 34 × 22 mm |
| TGG-8 | 320 × 30 × 17 mm / 320 × 34 × 17 mm / 320 × 34 × 22 mm |
| TGG-9 | 340 × 30 × 17 mm / 340 × 34 × 17 mm / 340 × 34 × 22 mm |
| TGG-10 | 370 × 30 × 17 mm / 370 × 34 × 17 mm / 370 × 34 × 22 mm |
| TGG-11 | 400 × 30 × 17 mm / 400 × 37 × 17 mm / 400 × 34 × 22 mm |
Working limits by type
| Environment | TYPE A | TYPE B | TYPE H | TYPE TA 28 |
|---|---|---|---|---|
| Soft environment | 240 bar @ 120 °C | 290 bar @ 120 °C | 340 bar @ 120 °C | — |
| High-temperature condition | 160 bar @ 400 °C | 800 bar @ 400 °C | 230 bar @ 400 °C | — |
| Standard high-heat band | 0–10 bar @ 430 °C | 0–10 bar @ 430 °C | 0–10 bar @ 430 °C | — |
| Aggressive environment | 35 bar @ 243 °C / 70 bar @ 300 °C | 35 bar @ 243 °C / 85 bar @ 300 °C | 42 bar @ 253 °C / 85 bar @ 300 °C | 120 bar @ 324 °C / 180 bar @ 356 °C |
Why Choose Borosilicate Transparent Gauge Glass
Choose this product when your project needs:
- clear level reading
- strip-form gauge glass for standard level gauge construction
- borosilicate material for technical service
- resistance to aggressive environments
- custom sizing within the published range
- optional gasket and mica sheet supply
