What Is DIN 7080 Sight Glass? Complete Guide to Specifications, Materials and Industrial Applications
DIN 7080 sight glass is a standardized industrial glass component widely used in pressure vessels, pipelines,
chemical reactors, and industrial equipment. It allows operators to visually monitor process conditions safely
under high temperature and pressure environments.
and performance requirements for circular sight glass discs.
What Is DIN 7080?
DIN 7080 is a German standard specifying circular sight glass plates used in industrial equipment.
- Standardized dimensions for interchangeability
- Defined thickness and tolerance ranges
- High pressure and temperature capability
- Compatible with flange and gasket systems
Common Materials for DIN 7080 Sight Glass
Different materials are used depending on operating conditions.
| Material | Temperature | Pressure | Chemical Resistance |
|---|---|---|---|
| Borosilicate Glass | High | High | Excellent |
| Aluminosilicate Glass | Higher | Very High | Excellent |
| Sapphire Glass | Extreme | Ultra High | Outstanding |
| Quartz Glass | High Temp | Medium | Excellent |
Standard Sizes
- 45 × 10 mm
- 45 × 12 mm
- 50 × 10 mm
- 50 × 12 mm
- 60 × 12 mm
- 60 × 15 mm
- 63 × 10 mm
- 63 × 12 mm
- 63 × 15 mm
- 80 × 12 mm
- 80 × 15 mm
- 80 × 20 mm
- 100 × 15 mm
- 100 × 20 mm
- 100 × 25 mm
- 125 × 15 mm
- 125 × 20 mm
- 125 × 25 mm
- 135 × 25 mm
- 150 × 20 mm
- 150 × 25 mm
- 150 × 30 mm
- 175 × 20 mm
- 175 × 25 mm
- 175 × 30 mm
- 200 × 20 mm
- 200 × 25 mm
- 200 × 30 mm
- 250× 25 mm
- 250 × 30 mm
- 262 × 30 mm
Applications
- Chemical processing plants
- Oil & gas pipelines
- Pharmaceutical reactors
- Food industry
- Steam boilers
- Water treatment systems
How to Select the Right Sight Glass
- Temperature range
- Pressure requirement
- Chemical medium
- Size standard (DIN 7080)
- Gasket compatibility
Common Failure Causes
- Thermal shock
- Over-tightening
- Wrong gasket material
- Mechanical impact
- Incorrect material selection
FAQs
What is DIN 7080 used for?
Industrial pressure vessel and pipeline observation.
What material is best?
Borosilicate glass is most common; sapphire for extreme conditions.
Can it handle high pressure?
Yes, depending on thickness and design.
Is it standardized?
Yes, fully standardized dimensions.
Which industries use it?
Chemical, oil & gas, pharmaceutical, food industries.
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