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Lumistar Straight-Through Sight Glass
The Lumistar Straight-Through Sight Glass is designed for direct visual monitoring of liquids, gases, and process media in industrial pipelines. Featuring a full-bore straight-through flow path and high-strength stainless steel construction, it ensures excellent visibility, minimal pressure loss, and reliable operation in demanding process environments.
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Technical data
Lumistar Straight-Through Sight Glass for Continuous Process Observation
The Lumistar Straight-Through Sight Glass is a premium inline viewing solution engineered for visual inspection of liquids, gases, and process media flowing through industrial pipelines.
Its straight-through design provides an unrestricted flow path, minimizing turbulence and pressure drop while offering a clear observation area for monitoring flow conditions, product quality, contamination, color changes, bubbles, foam formation, and process performance.
Manufactured from high-quality stainless steel and equipped with precision-engineered transparent viewing windows, the sight glass combines excellent mechanical strength, corrosion resistance, and optical clarity.
The viewing section can be supplied with borosilicate glass, tempered glass, fused quartz glass, or sapphire glass depending on operating pressure, temperature, and chemical compatibility requirements.
Designed for installation in chemical processing plants, pharmaceutical facilities, food production lines, petrochemical systems, water treatment plants, and industrial utility pipelines, the Lumistar Straight-Through Sight Glass provides safe and reliable process visibility with minimal maintenance requirements.
Lumistar Straight-Through Sight Glass— Technical Data
| Parameter Item | Description |
|---|---|
| Product Introduction | Straight through sight glass: used for observing the flow of liquid in pipelines such as reflux and cooling water before draining or receiving tanks. |
| Valve body material | available in various types such as carbon steel, stainless steel, rubber lining, fluorine lining, etc |
| Nominal pressure range | 10, 16, 25, 40, 64, 100 kilograms. |
| Working temperature | ≤ 300 °C |
| Nominal diameter | Temperature, pressure, and model can be customized non-standard for DN15 – DN200. |
Lumistar Straight-Through Sight Glass— Technical Advantages
| Feature | Benefit |
|---|---|
| Straight-Through Design | Reduced turbulence and pressure loss |
| Large Viewing Window | Improved process monitoring |
| Stainless Steel Housing | Superior corrosion resistance |
| High Strength Construction | Increased operational safety |
| Multiple Glass Options | Flexible application compatibility |
| International Standards | Easy global installation |
| Leak-Tight Sealing | Reliable process containment |
| Long Service Life | Lower maintenance costs |
Lumistar Straight-Through Sight Glass— Drawing


| Pg=10 kg/cm² | ||||||
|---|---|---|---|---|---|---|
| Nominal diameter Dg | External dimensions | Glass plate | Weight | |||
| in | mm | L | H | diameter | thickness | (kg) |
| 1/2″ | 15 | 200 | 130 | 65 | 10 | 4.5 |
| 3/4″ | 20 | 200 | 130 | 65 | 10 | 5 |
| 1″ | 25 | 200 | 130 | 65 | 10 | 5.5 |
| 1 1/4″ | 32 | 260 | 180 | 95 | 15 | 9.2 |
| 1 1/2″ | 40 | 260 | 190 | 95 | 15 | 9.7 |
| 2″ | 50 | 320 | 210 | 140 | 20 | 17 |
| 2 1/2″ | 65 | 320 | 235 | 140 | 20 | 19 |
| 3″ | 80 | 360 | 250 | 165 | 20 | 24 |
| 4″ | 100 | 360 | 270 | 165 | 20 | 26 |
| 5″ | 125 | 440 | 295 | 165 | 20 | 32 |
| 6″ | 150 | 440 | 335 | 165 | 20 | 36 |
| 8″ | 200 | 480 | 380 | 165 | 20 | 48 |
KEY FEATURES
Straight-Through Full-Port Design
Provides unrestricted media flow and minimizes pressure loss within the pipeline.
Excellent Process Visibility
Large transparent viewing area enables continuous monitoring of flow conditions and product quality.
Stainless Steel Construction
Available in SS304, SS316L, Duplex Stainless Steel, and customized corrosion-resistant alloys.
High Pressure Capability
Engineered for industrial process systems operating under pressure.
Corrosion Resistant Design
Suitable for aggressive chemicals, solvents, acids, alkalis, and process fluids.
Easy Maintenance
Simple modular construction allows quick inspection and replacement of components.
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 straight-through sight glass installed in a pipeline that allows operators to visually monitor fluid flow and process conditions without interrupting operation.
A:The straight-through configuration minimizes pressure loss and flow disturbance while providing maximum visibility.
A: Yes. Material combinations can be selected for acids, alkalis, solvents, seawater, and other aggressive media.
A: Yes. Pressure ratings can be customized according to project requirements.
A: Yes. Lumistar offers customized dimensions, materials, flange standards, and pressure classes.
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