DIN 7081 Gauge Glass | Reflex & Transparent (Max 400 Bar)
High-pressure DIN 7081 level gauge glass. Available in Borosilicate & Aluminosilicate (up to 400 Bar). Reflex and Transparent types for boiler & chemical use.
Description
DIN 7081 Level Gauge Glass (Reflex & Transparent)
Product Overview
Lumiglas DIN 7081 gauge glass is the premium solution for liquid level observation in high-pressure boilers and petrochemical vessels. Manufactured to strict DIN standards, our range includes both Reflex (grooved for steam clarity) and Transparent (smooth for dirty or corrosive media) types.
Specifically, we offer four distinct material grades ranging from standard Borosilicate to high-performance Aluminosilicate glass. This advanced material composition allows for operating pressures up to 400 Bar and temperatures up to 375°C, surpassing standard market alternatives.
Technical Specifications by Material
| Feature | Specification Details |
|---|---|
| Glass Types | Soda-lime | Borosilicate | Aluminosilicate | Alkali Resistant |
| Pressure Resistance | Standard: 40-64 Bar High Pressure (Aluminosilicate): Up to 320-400 Bar |
| Thermal Shock Resistance | 150°C (Soda-lime) to 280°C (Borosilicate/Alumino) |
| Max. Heat Resistance | ≤ 300°C (Borosilicate) / ≤ 375°C (Aluminosilicate) |
| Flexural Strength | 160 MPa (Standard) / 420-450 MPa (Aluminosilicate) |
| Young’s Modulus | 66 GPa (Borosilicate) / 112 GPa (Alkali Resistant) |
| Hydrolytic Resistance | Level 1 (ISO 719) – All materials |
| Acid Resistance | Class A1 (DIN 12116) – All materials |
| Alkali Resistance | Class A2 (Standard) / Class A1 (Alkali Resistant type) |
Industrial Applications
Our DIN 7081 gauge glasses are engineered to replace standard Klinger® or Maxos® glasses in critical infrastructure. Therefore, they are widely used in sectors demanding high safety margins:
- Power Generation: High-pressure steam boiler level indicators (up to 400 bar).
- Chemical Processing: Handling aggressive acids and alkalis with A1/A2 resistance classes.
- Refineries: Durable observation in high-temperature petrochemical reactors.
- Marine Industry: Reliable liquid level monitoring for shipboard boilers.
Reflex vs. Transparent: Which to Choose?
- Reflex Glass: Features molded grooves on the medium side. The grooves refract light, making liquid appear black and steam appear silver. Best for clear liquid level reading in clean media.
- Transparent Glass: Smooth on both sides. Used for dirty, viscous, or corrosive media. Additionally, it must be used when Mica shields are required to protect the glass from alkali attack or high-pressure steam.
