(Aluminosilicate Reflex Gauge Glass / AS Reflex Glass)
Product Overview
Aluminum Silicon Reflex Gauge Glass is a specialized aluminosilicate glass used in reflex-type liquid level gauges to provide clear, high-contrast visual level indication under high temperature and pressure conditions.
Compared with standard borosilicate reflex glass, aluminum silicon glass delivers higher mechanical strength, improved thermal shock resistance, and longer service life, making it the preferred choice for steam, boiler, petrochemical, and power generation applications.
The glass surface is precision-machined with prismatic reflex grooves that create a distinct light/dark contrast between vapor and liquid phases.
Material & Engineering Background
We supply industrial gauge glass components to OEM level gauge manufacturers, EPC contractors, and maintenance distributors worldwide. Our aluminum silicon reflex gauge glass is produced based on proven industrial standards, with stable batch control and long-term export experience in energy and chemical industries.
Each piece is engineered for process safety, sealing reliability, and consistent optical performance, not for decorative or low-duty use.
How Aluminum Silicon Reflex Gauge Glass Works
The prismatic grooves on the process side of the glass interact with light differently depending on the medium:
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Vapor area: Light is reflected → appears silver/bright
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Liquid area: Light is absorbed → appears dark/black
This optical principle allows operators to instantly distinguish liquid level without auxiliary lighting or electronics.
Key Performance Advantages
High Pressure Resistance
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Higher bending strength than borosilicate glass
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Suitable for medium to high-pressure reflex level gauges
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Excellent long-term pressure stability
Thermal Shock Stability
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Aluminum silicon glass tolerates rapid temperature changes
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Reduced risk of cracking during startup or shutdown
Extended Service Life
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Dense glass structure
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Improved resistance to erosion from steam and process fluids
Typical Applications
Aluminum silicon reflex gauge glass is widely used in:
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Steam boilers and drum level gauges
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Power plants and thermal systems
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Petrochemical and refinery equipment
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Chemical processing vessels
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High-pressure storage tanks
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Marine and offshore systems
Especially suitable where borosilicate reflex glass shows premature failure.
Technical Specifications
Material Properties Table
| Property | Value |
|---|---|
| Glass Type | Aluminum Silicon (Aluminosilicate) |
| Density | ~2.5 g/cm³ |
| Bending Strength | ≥ 150 MPa |
| Continuous Working Temperature | ≤ 350 °C |
| Short-Term Temperature | ≤ 400 °C |
| Thermal Shock Resistance | ≥ 220 °C |
| Light Transmission (Flat Side) | ≥ 88% |
📥 Download Full Technical Datasheet (PDF)
Pressure & Temperature Reference
Typical industrial operating limits (depending on frame design and gasket system):
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Working Pressure: up to 16 MPa (PN160)
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Recommended Working Temperature: ≤ 350 °C
Final pressure rating depends on gauge frame, gasket material, bolt preload, and installation condition. Engineering confirmation is recommended.
Standard Sizes & Dimensions
Common Reflex Gauge Glass Sizes
| Thickness (mm) | Width (mm) | Length (mm) |
|---|---|---|
| 17 | 30 | 115 / 140 / 165 / 190 |
| 19 | 30 | 220 / 250 / 280 |
| 22 | 34 | 320 / 340 |
| 25 | 34 | 370 / 400 |
| 30 | 34 | 500 |
Custom sizes are available upon request.
Surface Finish & Compatibility
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Precision-ground sealing surfaces
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Prismatic reflex grooves on process side
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Compatible with:
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Mica gaskets
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Graphite gaskets
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Stainless steel reflex gauge frames
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Designed for long-term sealing performance under cyclic load.
Installation & Maintenance Notes
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Always install with new mica or graphite gaskets
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Do not overtighten bolts; follow torque specifications
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Avoid contact with solid particles or abrasive media
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Periodic inspection recommended in steam service
Why Choose Our Aluminum Silicon Reflex Gauge Glass
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Industrial-grade aluminosilicate material
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Stable long-term supply for OEM & maintenance markets
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Strict dimensional and optical inspection
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Export-proven quality for power & chemical industries
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Technical support for gauge matching and selection
We focus on process reliability and safety, not low-cost consumer glass.
Ordering Information
To receive an accurate quotation, please provide:
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Required size (thickness × width × length)
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Working pressure & temperature
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Medium type (steam, water, chemical)
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Quantity & delivery requirement
Technical confirmation is provided before order acceptance.
Contact Us
Email: info@hsahglass.com
WhatsApp: 8618632879676
Website: www.hsahglass.com
For datasheets, samples, or quotations, feel free to contact us.
