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Cryogenic Flanged Sight Glass
The Cryogenic Flanged Sight Glass is designed for visual inspection in ultra-low temperature applications. Featuring cryogenic-grade stainless steel construction, specialized sealing systems, and high-performance viewing glass, it provides reliable observation of LNG, liquid nitrogen, liquid oxygen, and other cryogenic media.
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Technical data
Cryogenic Flanged Sight Glass for Ultra-Low Temperature Applications
The Cryogenic Flanged Sight Glass is specifically engineered for visual monitoring of cryogenic fluids and ultra-low temperature processes. It allows operators to safely observe flow conditions, liquid levels, phase transitions, and process status without interrupting operations.
Designed for LNG terminals, industrial gas plants, liquid nitrogen systems, liquid oxygen storage tanks, and cryogenic processing equipment, the assembly incorporates cryogenic-rated stainless steel flanges, low-temperature sealing materials, and high-strength viewing windows to withstand severe thermal contraction and temperature cycling.
The sight glass maintains excellent sealing integrity and optical clarity even under extreme cryogenic conditions. Depending on application requirements, viewing windows can be manufactured from borosilicate glass, fused quartz, or other specialized materials capable of handling rapid temperature changes and harsh industrial environments.
The robust flanged design allows easy installation into pipelines, storage vessels, separators, and process equipment where continuous visual inspection is critical for operational safety and efficiency.
Cryogenic Flanged Sight Glass— Technical Data
| Parameter | Typical value / options |
|---|---|
| Connection Type | Flanged (ANSI / DIN / JIS available) |
| Nominal Sizes | DN15 – DN300 (custom sizes on request) |
| Window Material | Sapphire / Fused Quartz / Borosilicate Glass |
| Temperature | -196°C/+350°C |
| Body Material | Stainless Steel 304 / 316 (others on request) |
| Pressure Rating | According to flange standard and window size |
| Sealing Options | PTFE, metal gasket, cryogenic-grade seals |
| Surface Finish | Machined, polished, or sandblasted |
KEY FEATURES
Designed for Cryogenic Service
Engineered specifically for ultra-low temperature applications including LNG, liquid nitrogen, liquid oxygen, liquid argon, and refrigeration systems.
Excellent Thermal Shock Resistance
Specialized glass materials resist cracking caused by rapid temperature fluctuations during startup and shutdown cycles.
Reliable Leak-Tight Sealing
Utilizes cryogenic-grade PTFE, graphite, or customized sealing systems to maintain sealing performance under extreme temperature conditions.
Corrosion Resistant Construction
Available in SS304, SS316L, Duplex Stainless Steel, and other corrosion-resistant alloys suitable for industrial gas and chemical applications.
High Optical Clarity
Provides clear observation of liquid levels, flow conditions, phase changes, and process behavior without process interruption.
Custom Material Options
Available with borosilicate glass, fused quartz glass, sapphire windows, and customized viewing materials depending on operating requirements.
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 cryogenic flanged sight glass is used to visually inspect cryogenic fluids, liquid levels, and flow conditions in low-temperature process systems without opening the equipment.
A:The operating temperature depends on material selection and application requirements. Cryogenic designs are suitable for LNG, liquid nitrogen, and other ultra-low temperature media.
A: Options include borosilicate glass, fused quartz glass, and sapphire windows for specialized applications.
A: Yes. Cryogenic sight glasses can be designed for vacuum service as well as pressure-rated applications.
A: Yes, optional accessories include LED lights, cleaning wipers, and explosion-proof illumination systems.
Need Custom Cryogenic Flanged Sight Glass Solutuions?
Send us your drawings or technical requirements for fast quotation and engineering support.