Flat Quartz Sight Glass

Quartz sight glasses are essential in high-temperature furnaces where visibility inside the furnace chamber is crucial for monitoring processes. They are used to observe internal conditions without compromising safety or performance.

Flat Quartz Sight Glasses

Designed to withstand temperatures up to 1450°C and thermal shock up to 500°C. These sight glasses are manufactured in diameters up to 8″ and thicknesses up to 1 ½”, with square, rectangular, and oblong shapes. Custom drilling, conical shapes, or special bevels available upon request.

Quartz Sight Glass – Main Uses and Applications

Applications in Furnaces

Quartz sight glasses are essential in high-temperature furnaces where visibility inside the furnace chamber is crucial for monitoring processes. They are used to observe internal conditions without compromising safety or performance. The high thermal resistance of quartz ensures durability under extreme temperatures, allowing operators to view the status of materials in process without the need to open the furnace door. This capability is vital in industries such as ceramics and glass manufacturing, where precise temperature control and visual monitoring are necessary to ensure quality.

Applications in Burners

In burners, quartz sight glasses play a critical role by providing a clear view of the combustion process. They are used to observe the flame and ensure proper combustion conditions. Quartz sight glasses are highly resistant to thermal shock and chemical exposure, making them ideal for environments with high temperatures and corrosive gases. This enables real-time monitoring and adjustments to maintain optimal burner performance, contributing to efficiency and safety in applications such as industrial heating and power generation.

Processes Where the Constant Temperature Exceeds 500°C

Quartz sight glasses are specifically designed to withstand environments where temperatures exceed 500°C. These glasses provide a clear view of high-temperature processes, such as in metal forging or high-temperature reactors. Their ability to withstand extreme heat without deforming or degrading makes them essential for processes that require precise temperature monitoring and control. By using quartz sight glasses, operators can ensure smooth and safe process operation, even under intense thermal conditions.

Flat Quartz Sight Glasses – Features

This flat quartz sight glass offers exceptional resistance to extreme temperatures and high pressures, making it ideal for high-demand industrial applications. Its high transparency allows for clear and precise visualization of internal processes, while its durability ensures long-lasting performance even in harsh conditions. Perfect for monitoring fluids in critical systems.

Type of GlassQuartz (Min Silica 96%)
Manufacturing Parameters
Minimum manufacturing thickness3 mm
Maximum manufacturing thickness50 mm
Minimum manufacturing diameter1 mm
Maximum manufacturing diameter500 mm
Operating Parameters
Maximum constant working temperature1450 °C
Maximum short-term temperature1400 °C
Thermal shock resistance500 K
Maximum working pressure*** Depending on Thickness
Chemical Properties
Hydrolytic resistanceHGB 1 (ISO 719)
Acid resistanceClass S1 (ISO 1776)
Alkaline resistanceClass A2 (ISO 695)
Chemical Composition
SiO2Min 96% Content

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