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Industrial Inline Tubular Sight Glass (Flanged Type)
The Industrial Inline Tubular Sight Glass (Flanged Type) is designed for real-time visual monitoring of liquid or gas flow in industrial pipelines. Its tubular transparent design provides 360° viewing of process media, ensuring safe and efficient operation in chemical, petrochemical, pharmaceutical, and water treatment systems.
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Technical data
Industrial Inline Tubular Sight Glass for Continuous Process Monitoring
The Industrial Inline Tubular Sight Glass (Flanged Type) is engineered to provide a clear visual inspection point within industrial pipelines. Installed between standard flanges, it enables operators to continuously observe process media while maintaining system integrity.
Its cylindrical glass tube offers complete visibility around the entire flow path, making it easier to detect fluid movement, sediment buildup, air bubbles, color variation, and process abnormalities in real time.
The sight glass is manufactured using premium borosilicate glass combined with carbon steel or stainless steel housings for excellent resistance to thermal shock, corrosion, and mechanical stress. Optional quartz glass, sapphire glass, PTFE lining, and special alloy materials are available for demanding operating conditions.
Designed for long service life and minimal maintenance, this tubular sight glass is widely used in chemical plants, oil & gas facilities, pharmaceutical production lines, food processing systems, water treatment plants, and many other industrial applications.
Industrial Inline Tubular Sight Glass — Technical Data
| Item | Specification |
|---|---|
| Product Name | Industrial Inline Tubular Sight Glass |
| Type | Flanged Type |
| Viewing Design | 360° Tubular Viewing |
| Installation | Inline Pipeline |
| Nominal Size | DN15 – DN300 |
| Body Material | Carbon Steel, SS304, SS316L |
| Optional Materials | Duplex Stainless Steel, Special Alloys |
| Glass Material | Borosilicate Glass 3.3 |
| Optional Glass | Quartz Glass, Sapphire Glass |
| Seal Material | PTFE, EPDM, Silicone, Graphite, FKM |
| Connection Standard | GB, ANSI, DIN, JIS |
| Operating Environment | 6 bar, according to different wall thickness (higher compressive strength can be customized) |
| Operating Temperature | Up to 220°C (Borosilicate) |
| Surface Finish | Industrial Standard or Customized |
Industrial Inline Tubular Sight Glass — Component Materials
| No | Part | Material |
|---|---|---|
| 1 | Link flange | Stainless steel 1.4571 or others |
| 2 | Glass cylinder | Borosilicate glass (DURAN) |
| 3 | Ring gaskets | silicone or others |
| 4 | Spacer shaft | stainless steel 1.4301 or other |
| 5 | Connecting bolts | A2 or others (with coils) |
Industrial Inline Tubular Sight Glass — Drawing
| Fitting | Part no. | Max pressure bar | Flanges | Conn. hole bolt & seturing bolts | Glass cylinder | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DN | BL | D | d1 | h | k | No. | d2 | da | WD | GL | ||
| 10 | 130 | LMX.081.00 | 6 | 90 | 10 | 16 | 60 | 4 | 14 | 15 | 1.8 | 106 |
| 15 | 130 | LMX.082.00 | 6 | 95 | 15 | 16 | 65 | 4 | 14 | 18 | 1.8 | 106 |
| 20 | 150 | LMX.082.00 | 6 | 105 | 20 | 16 | 75 | 4 | 14 | 24 | 1.8 | 126 |
| 25 | 160 | LMX.083.00 | 6 | 115 | 25 | 18 | 85 | 4 | 14 | 30 | 1.4 | 132 |
| 32 | 180 | LMX.085.00 | 6 | 140 | 32 | 18 | 100 | 4 | 18 | 38 | 2.0 | 152 |
| 40 | 200 | LMX.086.00 | 6 | 150 | 40 | 18 | 110 | 4 | 18 | 48 | 2.3 | 172 |
| 50 | 230 | LMX.087.00 | 5.6 | 165 | 50 | 18 | 125 | 4 | 18 | 58 | 2.5 | 202 |
| 65 | 290 | LMX.088.00 | 5.6 | 185 | 65 | 18 | 145 | 4 | 18 | 75 | 3.2 | 262 |
| 80 | 310 | LMX.089.00 | 6 | 200 | 80 | 20 | 160 | 8 | 18 | 95 | 5.0 | 278 |
| 100 | 350 | LMX.090.00 | 5.3 | 220 | 100 | 20 | 180 | 8 | 18 | 115 | 5.0 | 318 |
| 125 | 400 | LMX.091.00 | 6 | 250 | 125 | 20 | 210 | 8 | 18 | 140 | 7.0 | 368 |
| 150 | 480 | LMX.092.00 | 5.0 | 285 | 150 | 20 | 240 | 8 | 22 | 170 | 7.0 | 448 |
| 200 | 600 | LMX.093.00 | 4.9 | 340 | 200 | 22 | 295 | 8 | 22 | 225 | 9.0 | 564 |
KEY FEATURES
360° Transparent Viewing
The tubular glass design provides complete visibility of flowing media from every direction for accurate process observation.
Robust Flanged Construction
Standard flange connections ensure secure installation and compatibility with GB, ANSI, DIN, and JIS pipeline systems.
Multiple Material Options
Available with carbon steel, SS304, SS316L, duplex stainless steel, and PTFE-lined construction.
Suitable for Various Operating Conditions
Designed for a wide range of temperatures, pressures, and industrial process fluids.
Fully Customizable Design
Custom dimensions, flange standards, pressure ratings, glass materials, and sealing solutions are available upon request.
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: It is a transparent pipeline inspection device used to visually monitor liquid or gas flow without interrupting the production process.
A:Its cylindrical design provides a full 360-degree viewing angle, making it easier to detect bubbles, sediment, discoloration, or abnormal flow conditions.
A: Borosilicate glass is suitable for most industrial applications. Quartz glass and sapphire glass are recommended for higher temperatures or more aggressive operating environments.
A: Yes. All sight glass discs are supplied with precision ground or polished edges for reliable installation.
A: Yes. Replacement borosilicate, quartz, and sapphire glass tubes are available together with sealing kits.
Need Custom Industrial Inline Tubular Sight Glass (Flanged Type) Solutuions?
Send us your drawings or technical requirements for fast quotation and engineering support.