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Self-Cleaning Vessel Sight Glass
The Self-Cleaning Vessel Sight Glass features an integrated scraper mechanism that continuously removes deposits, crystallization, condensation, and product buildup from the viewing surface. It ensures clear visibility inside tanks, reactors, and process vessels without interrupting production.
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Technical data
Self-Cleaning Vessel Sight Glass for Continuous Process Visibility
The Self-Cleaning Vessel Sight Glass is specifically designed for applications where deposits, crystallization, condensation, sludge, or viscous media frequently obstruct the viewing area of conventional sight glasses.
The assembly integrates a mechanical scraper or wiper system that can be operated during production to continuously clean the inner glass surface. This allows operators to maintain a clear view of liquid levels, mixing processes, reaction conditions, foam formation, and product characteristics without shutting down the system.
Unlike standard sight glasses that require periodic shutdown and manual cleaning, the self-cleaning design significantly reduces maintenance time and improves process reliability. The scraper mechanism removes deposits directly from the glass surface while maintaining vessel integrity and sealing performance.
The sight glass can be supplied with borosilicate glass, fused quartz glass, or tempered safety glass depending on process requirements. Housing materials include SS304, SS316L, Duplex Stainless Steel, Hastelloy, and other corrosion-resistant alloys.
Self-Cleaning Vessel Sight Glasses are widely used in chemical processing, petrochemical production, food manufacturing, wastewater treatment, pharmaceutical plants, and industries handling sticky, crystallizing, or high-viscosity products.
Self-Cleaning Vessel Sight Glass— Technical Data
| Parameter | Typical value / options |
|---|---|
| Compatible nominal widths | DN50 – DN400 (DIN 28120 / DIN 11851 style) |
| Lens material | Sodium calcium glass or borosilicate glass |
| Pressure resistance | 2 – 6 bar (depends on lens spec and flange) |
| Temperature | Up to 280 °C (lens-dependent) |
| Scraper material | PTFE / EPDM (selection per application) |
| Metal parts in contact with scraper | Stainless steel (1.4301 / 1.4401 / 1.4404 / 1.4571) |
| Seals | Viton O-rings; asbestos-free gasket BAS 400 |
| Max scraper diameter | Up to 460 mm (custom) |
Self-Cleaning Vessel Sight Glass— Technical Advantages
| Feature | Benefit |
|---|---|
| Integrated Scraper | Continuous cleaning during operation |
| Clear Viewing Surface | Improved process monitoring |
| Stainless Steel Construction | Excellent corrosion resistance |
| Pressure & Vacuum Compatible | Versatile industrial applications |
| Multiple Glass Materials | Adaptable to different processes |
| Reduced Maintenance | Lower operating costs |
| High Viscosity Media Capability | Suitable for difficult products |
| Long Service Life | Reliable long-term performance |
Dimensions for Self-Cleaning Vessel Sight Glass with electrical appliance data and size
| Size | 3 | 4 | 5* | 6* | 7* | 8* | customized | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 9 | 10 | 11 | 12 | ||||||||
| Mirror nominal width | DN | 50 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 |
| Visual diameter | d₁ | 80 | 100 | 125 | 150 | 175 | 225 | Fill in requirements | |||
| Sodium calcium borosilicate mirror lenses | D | 100 | 125 | 150 | 175 | 200 | 250 | ||||
| s | 15/15¹ | 15/15¹ | 15/19¹ | 15/19¹ | 15/19¹ | 15/25¹ | |||||
| PN MAX …bar | 6/6¹ | 6/6¹ | 5/6¹ | 4/6¹ | 4/4¹ | 2/4¹ | |||||
| Scraper | d₂ | 77 | 97 | 122 | 147 | 172 | 222 | The size of the scraper must match the diameter of the lens, with a maximum of 460mm | |||
| number | 062. | .063. | .064. | .065. | .066. | .067. | |||||
KEY FEATURES
Integrated Self-Cleaning Scraper
Built-in scraper mechanism continuously removes deposits and fouling from the viewing surface during operation.
Improved Process Visibility
Maintains a clear observation window even when handling viscous, crystallizing, or sticky products.
Reduced Downtime
Allows cleaning without opening the vessel or interrupting production.
Corrosion Resistant Materials
Available in SS304, SS316L, Duplex Stainless Steel, Hastelloy®, and other special alloys.
Multiple Glass Options
Compatible with borosilicate glass, quartz glass, tempered glass, and customized viewing materials.
Custom Design Support
OEM / ODM customization available
Custom Manufacturing Service
We provide tailor-made solutions according to drawings or technical requirements.
- Custom diameter
- Custom thickness
- Special pressure design
- Edge polishing
- Optical finishing
- OEM / ODM support
- Custom packaging
TYPICAL APPLICATIONS
- Pressure Vessels
- Chemical Reactors
- Boilers & Steam Systems
- Pipeline Sight Glass Assemblies
- Pharmaceutical Equipment
- Food & Beverage Processing
- Industrial Observation Ports
FAQ
A: A Self-Cleaning Vessel Sight Glass is a viewing assembly equipped with a scraper or wiper mechanism that removes deposits from the glass surface while the process remains in operation.
A:The scraper prevents fouling, condensation, crystallization, and product buildup that can block visibility through standard sight glasses.
A: Yes, borosilicate glass can typically withstand up to 280°C depending on operating conditions.
A: Yes. Designs can be supplied for pressure-rated vessels and vacuum service depending on operating requirements.
A:Yes. Viewing diameter, scraper design, pressure rating, material selection, and connection type can all be customized.
Need Custom Self-Cleaning Vessel Sight Glass Solutuions?
Send us your drawings or technical requirements for fast quotation and engineering support.