Our 304/316 Stainless Steel Sight Glass Flange (Viewing Flange) is a specialized connecting and observation component designed for real-time monitoring of liquid, gas, or solid media in industrial piping systems and equipment. Combining the functionality of a standard flange with an integrated sight glass, it allows operators to visually inspect media flow, level, color, and clarity without disassembling the pipeline, ensuring process safety and operational efficiency. Crafted from premium 304 and 316 stainless steel, this flange delivers exceptional corrosion resistance, high-temperature tolerance, and structural reliability, making it suitable for a wide range of harsh industrial environments.
Unlike ordinary flanges, our sight glass flange features a seamless integration of a precision sight glass (borosilicate glass or quartz glass) with a stainless steel flange body, ensuring leak-proof performance and clear observation. It is widely used in industries where visual monitoring is critical, such as chemical processing, food and beverage production, and oil & gas operations, providing a cost-effective and reliable solution for process control and safety management.
Key Features & Advantages
- Dual-Grade Corrosion Resistance:304 stainless steel offers excellent resistance to general corrosion, suitable for standard industrial media (water, air, non-corrosive liquids). 316 stainless steel, enhanced with molybdenum, provides superior protection against chlorides, acids, and marine environments, ideal for harsh corrosive media.
- Global Standard Compliance:Fully adheres to international standards including ASTM A182 (material), ANSI B16.5 (flange dimensions), ensuring interchangeability with global piping systems and equipment, suitable for domestic and overseas projects.
- Clear Visual Monitoring:Equipped with high-transparency borosilicate or quartz sight glass (optional), offering excellent light transmission and clarity for real-time observation of media flow, level, and condition, helping to detect abnormalities promptly.
- Leak-Proof Design:Precision-machined flange body and sight glass seal (PTFE or graphite gasket) ensure tight, leak-proof connection, preventing media leakage and ensuring operational safety in high-pressure or high-temperature environments.
- High Temperature & Pressure Resistance:Suitable for operating temperatures up to 300°C (depending on sight glass type) and pressures ranging from Class 150 to Class 600 (PN6-PN40), adapting to various industrial process requirements.
- Easy Installation & Maintenance:Standard flange design allows easy installation and alignment with existing piping systems. The detachable sight glass enables convenient cleaning, replacement, and maintenance without disrupting the entire pipeline.
- Durable & Reliable:Rugged stainless steel flange body and high-strength sight glass resist impact, wear, and chemical erosion, ensuring long service life and minimizing maintenance needs in continuous operation.
Applications
Our 304/316 Stainless Steel Non-standard Flanges are widely used in projects with special requirements, including:
- Chemical Processing (monitoring corrosive liquids, reactants, and process flows)
- Oil & Gas, Petrochemical Industries (viewing oil, gas, and fuel flow)
- Food & Beverage Production (monitoring liquid food, beverages, and hygiene processes)
- Pharmaceutical Industries (observing drug solutions, sterile media)
- Water Treatment & Plumbing Systems (monitoring water flow and clarity)
- Power Generation (viewing coolant, steam, and other process media)
- General Industrial Piping (process control and safety monitoring)