Sanitary Stainless Steel Hex Flange Sight Glass
Product Description
Product Overview
Specifically engineered for the demanding needs of high-purity industries, including food processing, pharmaceuticals, and biotechnology, the sanitary stainless steel hex flange sight glass provides unparalleled real-time visual monitoring. Witness fluid flow, liquid levels, and reaction processes directly within your pipelines or vessels. This state-of-the-art product merges hygienic stainless steel construction with a pressure-resistant high-transparency window and a robust hex flange sealing mechanism. Together, these components ensure superior functionality and cleanliness, meeting the most rigorous sterile production standards.
Key Features
1. Material & Hygiene Certifications
- Body Material: Crafted from SUS 304/316L stainless steel, this sight glass meets FDA, EHEDG, and 3-A Sanitary Standards. Its mirror polishing (Ra ≤0.6μm) or electropolishing features prevent microbial growth, making it suitable for the most hygiene-sensitive environments.
- Window Material: Choose between tempered borosilicate glass or quartz glass, known for their exceptional transparency and impact resistance. These materials withstand temperatures up to 200°C and are compliant with ISO 4802 standards for food-safe glass.
2. Hygienic Structural Design
- Hex Flange Connection: Its compact design utilizes internal hex bolts ensuring secure fastening. The flat sealing surfaces, combined with silicone/EPDM/PTFE gaskets, promise zero leakage and allow easy disassembly for thorough cleaning.
- Dead Space-Free: The flush-mounting with pipeline walls effectively eliminates crevices, preventing any residue buildup. It's designed for compatibility with CIP/SIP cleaning and sterilization processes.
3. Performance Specifications
- Pressure Resistance: Handles pressures from -0.1 to 1.0 MPa, with customization options up to 1.6 MPa for applications demanding high pressure.
- Temperature Range: Operates efficiently within -20°C to +150°C, with the window tolerating up to +250°C short-term.
- Media Compatibility: Suitable for a variety of substances such as water, steam, acid/alkali solutions, dairy products, and pharmaceuticals. For corrosive fluids, the 316L variant is recommended.
4. Connections & Dimensions
- Flange Standards: Compatible with DIN, SMS, ISO, and 3-A sanitary flanges. Available in sizes ranging from DN25 to DN150 (1" to 6").
- Window Sizes: Standard observation windows range from φ50mm to φ150mm, with custom sizes available to suit your specific needs.
Applications
- Food & Beverage: Ideal for monitoring fermentation tank levels and allowing visual inspection of transparent pipelines in filling lines.
- Biopharmaceuticals: Facilitates process visualization in reactors and enables status checks in purified water systems.
- Cosmetics: Perfect for monitoring the transfer processes of high-viscosity raw materials, ensuring precision and quality.
Packaging & Warranty
- Clean Packaging: Each unit is carefully packaged with a protective film over the window surface, vacuum-sealed, and cushioned with shock-proof foam-lined cases. Included are installation guides and certification documents to ensure seamless setup.
- Warranty: Backed by an 18-month warranty, with optional explosion-proof test reports and support for custom sizing.
Product Parameters
Steel Parts |
SS304;SS316L |
The material of glass |
silicon boride glass |
Sealings |
EPDM or NBR or PTFE |
Working temperature |
-20~+135'C(when the sealing isEPDM |
Detailed Photos






Packaging & Shipping

Certifications

About US





FAQ
Q:How do you pack?
A:Plastic bags-------(Paper boxes)-------Cartons-------Plywood cases
Q:How long is the quality guarantee period?
A:We supply 6 to 12 months for quality guarantee according to customers' using frequency.
Q:How can you guarantee the quality of products?
A:First of all, we have the numerical control device to manufacture products accurately. Then our quality inspectors will test products one by one to make sure every flange or fitting we sell is qualified.
Q:How can I check your factory situation while it's difficult for me to come to China.
A:We have photos and videos on our website, It shows every step of the manufacturing.
Alternatively, I can take videos or photos of our factory and send them to you.
Q:What is your lead time?
A:It's around 15 days normally. If we have the products in stock, it will be about 5days.
Q:Can you print our Logo on the valves/Fittings?
A:Yes, we can totally produce products according to your this kind special request, even manufacture it based on your drawing
Q:Are samples available to be sent with free?
A:It depends on what product you need. There are hundreds of products we sell. You can contact us for particular answer.
Q:Do you have a minimum quantity of the products?
A:No, we will build business with you with even 1pc. We believe this cooperation will be a long-term relationship for our high quality, competitive price and good after-sale service.
Q:Where are the main markets for your products?
A:We hope to make business with companies from all over the world. And for now, our flanges and fittings have been exported to especially in North America, South America, South Asia, Europe and Middle East.
Q:Are you a factory or trading company?
A:We are a factory specialized in manufacturing flange and fitting over 10 years.