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Borosilicate gauge glasses - Long and circular types

Stress-optical view of thermally pre-stressed circular and long gauge glasses in polarized light

The quality of a sight (gauge) glass depends mainly on the chemical composition and mechanical strength of the glass material.
Constant glass quality is provided through glass analyses and acid/alkali tests. The mechanical strength is attained through thermal pre-stressing.

Liquid level gauges
The gauge glass is the most important component of the liquid level gauge.

KLINGER gauge glasses are suitable for installation in liquid level gauges of almost any make.

KLINGER transparent glass (above)
and reflex glass (underneath)
We manufacture our gauge glasses ourselves and use exclusively “extra-hard” borosilicate glass which is subsequently heat-treated.
KLINGER gauge glasses have high mechanical strength and are exceptionally
resistant to alkalis, acids and boiler water (within the service limitation). Our glass testing laboratory carries out continuously quality control tests: purity of glass, flaws in glass, dimensional accuracy, etc. This ensures the high quality standard of KLINGER gauge glasses.
We manufacture reflex and transparent glasses according to the most varied international standards.

Circular gauge glasses made from
borosilicate glass "extra-hard"
Fields of application:
• Oil refineries
• Petro-chemical plants
• Pharmaceutical manufacture
• Chemical processing
• Mechanical engineering, especially manufacture of boilers and storage vessels
• Foodstuffs and beverages industry
• Water engineering
• Paper and cellulose industry
• Textile industry
• Marine engineering
• Nuclear engineering