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Common Lens Defects and Solutions: A Complete Guide to Cracks, Fogging, and Corrosion
Installing sight glass may seem straightforward, but overlooking critical details can lead to safety hazards, equipment failure, or poor visibility during operation. Whether it’s for industrial tanks, pipelines, or pressure vessels, careful attention to installation is essential. Here are five key factors you must not ignore.
1. Correct Glass Type
Always ensure the sight glass material matches your system’s operating conditions. For high-pressure or corrosive environments, use borosilicate or quartz glass. Choosing the wrong type can lead to breakage or chemical degradation.
2. Proper Gasket Selection
The gasket forms the seal between the glass and the frame. Select a gasket that’s compatible with both the media and the operating temperature. Improper gasket material can cause leaks or accelerate wear on the glass.
3. Torque Balance
Over-tightening mounting bolts can crack the glass, while under-tightening may lead to leaks. Apply torque evenly in a cross-pattern and follow the manufacturer’s recommended torque settings to ensure uniform pressure distribution.
4. Cleanliness
Before installation, ensure all components are clean and free from dust, oil, or debris. Contaminants can cause improper sealing or weaken the glass over time, especially in high-temperature environments.
5. Alignment and Positioning
Ensure the sight glass is aligned correctly with the viewing axis and not subject to mechanical stress. Misalignment can lead to stress fractures or reduced visibility during operation.
Conclusion
Proper installation of sight glass is vital for safety and operational efficiency. By paying attention to glass type, gasket compatibility, torque application, cleanliness, and alignment, you can significantly increase the lifespan and performance of your sight glass system.
