Overview
Anhui Xinfulong's Electronic Grade Sight Glasses are precision-engineered for visual flow monitoring in the most demanding high-purity and corrosive fluid handling applications. Designed specifically for the semiconductor, wet electronic chemical, pharmaceutical, and ultra-pure chemical processing industries, our sight glasses provide clear, reliable, 360-degree visual inspection of fluid flow while maintaining the highest levels of purity and contamination control.
The sight glass features a full fluoropolymer lining — available in PFA (Perfluoroalkoxy) or FEP (Fluorinated Ethylene Propylene) — that completely isolates the metal body from the process medium. All wetted surfaces, including the body interior, flanges, and sealing components, are lined with high-purity fluoropolymer to ensure zero metal contact with the process fluid. The viewing element is constructed from heavy-wall borosilicate glass, offering exceptional thermal shock resistance, mechanical strength, and optical clarity for continuous process observation.
Manufactured in Class 1000/10,000 cleanroom environments using electronic-grade raw materials, our sight glasses meet the stringent cleanliness requirements of semiconductor fabrication, including advanced node processes.
Key Features
Ultra-High Purity Construction
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Full fluoropolymer lining (PFA or FEP) on all wetted surfaces — body interior, flanges, gaskets, and sealing components
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Zero metal ion contamination — no contact between process fluid and metal substrates
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Electronic-grade raw materials used throughout manufacturing
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Non-stick, inert surface properties ideal for high-purity and highly viscous applications
Superior Chemical Resistance
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Chemically inert to virtually all acids, bases, solvents, and aggressive chemicals
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Resistant to concentrated sulfuric acid, hydrochloric acid, nitric acid, hydrofluoric acid, aqua regia, and ultra-pure solvents
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PFA lining offers superior performance at elevated temperatures (up to 260°C)
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Exceptional resistance to stress cracking and permeation
Crystal-Clear Visual Monitoring
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Heavy-wall borosilicate glass viewing element provides exceptional optical clarity
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Available in both bullseye (circular) and tubular (360°) configurations
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Tubular design enables 360-degree viewing from any direction
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Quick, reliable, and economical verification of fluid flow in pipelines
Durable & Reliable Construction
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Metal body (carbon steel or stainless steel) provides structural strength
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Thick, uniform, blowhole-free fluoropolymer lining ensures long service life
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Heavy-wall borosilicate glass withstands high temperatures, mechanical stress, and corrosion
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Optional outer acrylic shield available for additional mechanical glass protection
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Suitable for both positive pressure and full vacuum service
Flexible Installation
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Can be installed vertically or horizontally
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Flanged connections to suit ASME, DIN, EN, HG/T, and JIS standards
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Available in a wide range of sizes to match any piping system
Available Configurations
Technical Specifications
Lining Material Comparison
Applications
Our Electronic Grade Sight Glasses are widely deployed in high-purity and corrosive fluid handling applications:
Semiconductor Manufacturing
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High-purity chemical delivery lines for wet etching, wafer cleaning, and photoresist processing
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Ultra-pure water (UPW) and chemical distribution systems
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Wet process equipment and chemical mechanical planarization (CMP) slurry lines
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Advanced node (7nm and below) chemical handling
Wet Electronic Chemicals
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Transfer and monitoring of high-purity acids, solvents, and etchants
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Chemical blending and distribution systems
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High-purity reagent feed lines
Pharmaceutical & Biotech
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High-purity fluid transfer with zero contamination risk-
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Solvent and reagent delivery systems
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FDA-compliant processing lines
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CIP/SIP-compatible applications
Chemical Processing
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Handling of strong acids (sulfuric, hydrochloric, nitric, hydrofluoric)
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Caustic soda and alkaline solutions
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Organic solvents and aggressive media
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Pickling and plating lines
New Energy
Food & Beverage
Why Choose Xinfulong Electronic Grade Sight Glasses?
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Ultra-High Purity — Manufactured using electronic-grade raw materials in Class 1000/10,000 cleanrooms, ensuring the highest levels of purity for semiconductor and pharmaceutical applications-
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Zero Contamination Risk — Full fluoropolymer lining on all wetted surfaces eliminates metal ion contamination and particle generation
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Superior Chemical Resistance — PFA and FEP linings provide exceptional resistance to virtually all aggressive chemicals, far outlasting standard glass or metal sight glasses in corrosive service
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Clear, Reliable Visual Monitoring — Heavy-wall borosilicate glass with bullseye or 360° tubular configurations provides exceptional optical clarity for process observation
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Durable Construction — Metal body with thick, uniform, blowhole-free fluoropolymer lining ensures long service life and reliable performance
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Industry-Leading Expertise — Backed by decades of fluoropolymer processing experience and R&D collaboration with Japanese and Korean experts
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Proven Global Track Record — Trusted by clients across Europe, Japan, Korea, Taiwan (China), and beyond
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Comprehensive Quality Assurance — ISO 9001, ISO 14001, ISO 45001 certified with full in-house testing capabilities
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End-to-End Service — From custom design and material selection to manufacturing, testing, and after-sales support
Customization Options
We offer fully customizable electronic grade sight glasses to meet your specific requirements:
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Bullseye (circular) or tubular (360°) configurations
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PFA or FEP lining materials
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Body materials: carbon steel, stainless steel, or ductile cast iron
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Connection types: flanged (ANSI, DIN, EN, HG/T, JIS)
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Custom sizes from DN15 to DN250
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Custom face-to-face lengths (up to 1500mm)
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Optional outer acrylic shield for mechanical glass protection
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Special glass materials for specific chemical resistance (e.g., mica shields for alkaline liquids)-
