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Alkali-Resistant Mica Sight Glass
Alkali Resistant Mica Glass is designed to protect level gauge glass from alkaline corrosion, high-temperature media, and aggressive process fluids. Installed between the liquid medium and the gauge glass, it significantly extends service life and improves operational safety in boilers, steam systems, chemical plants, and industrial level measurement equipment.
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Technical data
Alkali-Resistant Mica Glass Overview
Alkali Resistant Mica Glass is a high-performance transparent protection material used in reflex and transparent level gauge assemblies. It serves as a protective barrier between the process medium and the gauge glass, preventing alkaline attack, erosion, and surface deterioration caused by hot water, steam, and aggressive chemicals.
Manufactured from selected natural mica sheets, this material offers excellent transparency, outstanding heat resistance, and superior chemical stability. It is widely used in boiler water level indicators, steam drums, power generation systems, petrochemical plants, and industrial process equipment where long-term gauge glass protection is required.
By installing Alkali Resistant Mica Glass, operators can significantly reduce gauge glass replacement frequency, improve equipment reliability, and lower maintenance costs.
Alkali-Resistant Mica Glass — Technical Data
| Parameter | Value / Standard |
|---|---|
| Chemical Stability (Alkali) | pH 8 – 14 (Excellent resistance to NaOH, KOH) |
| Max Operating Temp | -273°C to +600°C |
| Estimated Service Life | ≈ 6 Months at extreme conditions (pH 14 @ 180°C) *Significantly longer at lower temps/concentrations. |
| Acid Resistance | Not recommended for pH < 6 |
| Bending Strength | 450 – 540 MPa |
| Hardness (Vickers) | 500 – 700 HV |
| Common Dimensions | Thickness: 5–40mm | Shape: Round, Rectangular, Oval (Customized to drawing) |
| Certificates | EN10204 3.1, Chemical Composition Analysis |
KEY FEATURES
Alkali Resistance
Protects gauge glass from alkaline corrosion and chemical attack in high-temperature process environments.
Steam & Hot Water Protection
Acts as a protective barrier in high-temperature boiler and steam applications.
Excellent Optical Clarity
Provides clear and unobstructed level observation
Extended Service Life
Helps reduce gauge glass wear and maintenance frequency
Reliable Thermal Stability
Suitable for demanding industrial operating environments
Custom Design Support
OEM / ODM customization available
Custom Manufacturing Service
We provide tailor-made solutions according to drawings or technical requirements.
- Custom diameter
- Custom thickness
- Special pressure design
- Edge polishing
- Optical finishing
- OEM / ODM support
- Custom packaging
TYPICAL APPLICATIONS
- Pressure Vessels
- Chemical Reactors
- Boilers & Steam Systems
- Pipeline Sight Glass Assemblies
- Pharmaceutical Equipment
- Food & Beverage Processing
- Industrial Observation Ports
FAQ
A: The standard material is thermally toughened Borosilicate Glass 3.3, known for its excellent thermal and chemical resistance.
A: Yes, based on drawings or specifications.
A: DIN 7080 borosilicate sight glass is suitable for temperatures up to approximately 280°C under standard operating conditions.
A: Can DIN 7080 sight glass be used under pressure?
A: Yes. EN 10204 3.1 certificates, material test reports, dimensional inspection reports, and traceability documents are available upon request.
Need Custom Alkali-Resistant Mica Sight Glass Solutuions?
Send us your drawings or technical requirements for fast quotation and engineering support.