Product Introduction
Our Sanitary Sight Glass is a transparent observation device specifically designed for hygienic processing systems. It enables operators to visually inspect liquids, gases, or vapors in pipelines and vessels without opening or disassembling the equipment-eliminating the risk of cross-contamination and ensuring operational safety. Crafted with food-grade, corrosion-resistant materials and a seamless hygienic design, this sight glass meets the stringent requirements of GMP, 3A, FDA, and USP Class VI standards, making it suitable for even the most critical high-purity applications. Whether you need to monitor mixing clarity, verify CIP/SIP cleaning, or observe fermentation processes, our Sanitary Sight Glass delivers reliable, unobstructed visibility to keep your operations running smoothly.
Product Features
1.Hygienic Design for Purity Assurance : The sight glass features an electrolytic polished surface with Ra ≤ 0.8 μm, minimizing residue accumulation and preventing bacterial growth-critical for maintaining product purity in hygienic industries. Its seamless structure eliminates dead corners and crevices, ensuring easy cleaning and sanitization, and fully complying with CIP (Clean-in-Place) and SIP (Sterilize-in-Place) protocols.
2.Superior Material & Durability : Constructed with high-quality 304 or 316L stainless steel (AISI 304/316L, EN 1.4301/1.4404) for the body, paired with borosilicate or quartz glass for the viewing window. Borosilicate glass offers excellent temperature resistance (-10~250°C), while quartz glass can withstand extreme temperatures (-30~800°C) for high-heat applications. The silicone, EPDM, PTFE, or NBR gaskets are FDA-approved, ensuring leak-proof performance and resistance to acids, alkalis, and various chemicals.
3.360° Unobstructed Visibility : Equipped with a full-range viewing design, our Sanitary Sight Glass allows 360° observation from any angle, enabling continuous monitoring of fluid flow, color changes, and reaction processes-helping you detect abnormalities in real time and prevent accidents. For dark environments, we also offer optional LED-equipped models with built-in neodymium flashlights (220 lumens) and waterproof stainless steel housings (DC24V safety power supply) for enhanced visibility.
4.Easy Installation & Versatility : Available with multiple connection types to fit your system, including tri-clamp (sanitary clamp), flange, threaded, and butt-weld connections-facilitating quick installation and easy maintenance. The seals and glass are replaceable, and the product can be customized in shape, size, and lens type to meet the specific needs of your application. It supports both vertical and horizontal installation, with optional stainless steel protective covers for added safety.
5.Certified & Reliable : Our Sanitary Sight Glass is certified by global authorities, including 3A, FDA, CE, USP Class VI, and BPE, ensuring compliance with international hygienic standards for food, pharmaceutical, and cosmetic industries. It boasts excellent pressure resistance (0.6-2.5 MPa, up to 230 psi depending on size) and long service life, even in harsh industrial environments.
Application Scenarios
- Food & Beverage Industry : Dairy, beer, juice, seasoning, and bottled water production-monitoring mixing, filtration, and filling processes.
- Pharmaceutical & Biopharmaceutical Industry : Fermenters, WFI (Water for Injection) systems, sterile filtration, and chromatography-ensuring compliance with GMP and USP standards.
- Cosmetic & Daily Chemical Industry : Lotion, fragrance, and skincare product mixing-maintaining product purity and consistency.
- Fine Chemical & Laboratory Applications : Monitoring chemical reactions, fluid flow, and contamination-free processing in lab equipment and fine chemical production.
- Other Hygienic Processes : Breweries, wineries, and any system requiring CIP/SIP compatibility and high-purity observation.
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| Item | Specification |
|---|---|
|
Body Material |
304 Stainless Steel (standard), 316L Stainless Steel (optional); Duplex Stainless Steel or Hastelloy available for special applications |
|
Window Material |
Borosilicate Glass (DIN 7080), Quartz Glass (optional for high-temperature applications) |
|
Seal Material |
FDA-approved Silicone, EPDM, PTFE, NBR, or FFKM (Perlast) |
|
Connection Type |
Tri-clamp (ASME BPE compatible), Flange, Threaded, Butt-weld; DIN/ISO tri-clamp available upon request |
|
Nominal Diameter (DN) |
DN 15 - DN 150 (1/2″ – 6″), customizable for larger sizes |
|
Temperature Range |
Borosilicate Glass: -10°C ~ 250°C; Quartz Glass: -30°C ~ 800°C |
|
Pressure Range |
0.6 - 2.5 MPa (10 - 230 psi), varies by size and material |
|
Surface Finish |
Wetted Parts: ASME BPE SF1 (20 Ra μin / 0.5 μm) mechanical polish; Electropolish (SF5) optional; External: 32 Ra μin (0.8 μm) mechanical polish |
|
Certifications |
3A, FDA, CE, USP Class VI, BPE, TÜV (optional) |
|
Customization |
Size, shape, lens type, connection method, and additional features (LED light, protective cover, glass scraper) available |







