Overview
Anhui Xinfulong‘s Wafer Lined Butterfly Valves are engineered for bidirectional bubble-tight shutoff and precise flow control in highly corrosive, high-purity, and ultra-pure applications. Featuring a precision-molded fluoropolymer liner — available in PFA, FEP, or PTFE — that fully encapsulates all wetted parts including the body cavity, disc, and stem contact surfaces, our wafer-style butterfly valves ensure zero metal contact with the process media.
The wafer design offers a compact, lightweight, and cost-effective solution for isolation and control duties, making it the ideal choice for space-constrained installations in semiconductor fabrication, wet chemical processing, pharmaceutical manufacturing, and ultra-pure water systems-. Available with manual, pneumatic, or electric actuation, our valves integrate seamlessly into automated process control systems.
Key Features
Full Fluoropolymer Lining
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Precision-molded PFA, FEP, or PTFE liner fully encapsulates all wetted parts — body cavity, disc, and stem contact surfaces
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Provides unsurpassed resistance to corrosion, permeation, and microbial contamination
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Spark-tested at 15kV to ensure pinhole-free lining integrity
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Translucent, high-purity grade body ensures no chemical reactions or impurity effluents
Bidirectional Bubble-Tight Shutoff
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Spherically molded liner and matching disc interface form a tight bidirectional seal
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Energized backup liner maintains uniform sealing pressure
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Zero leakage performance — ISO 5208 Rate A, ANSI Class VI, DIN 3230 T3 BO
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End-of-line service capability: elastomer backup liner enables downstream dismantling at full working pressure
Blow-Out Proof One-Piece Disc/Stem
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Integrally designed disc and stem eliminates mechanical joints
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Prevents damage to the fluoropolymer lining
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Ensures vacuum service capability down to 0.0002 psia
Advanced Stem Sealing System
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Live-loaded, self-adjusting stem seal minimizes fugitive emissions
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Compliant with ISO 15848-1/2 and TA-Luft (VDI 2440)
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ISO 5211 actuator mounting flange for direct mounting of manual, electric, or pneumatic actuators without brackets
Compact Wafer Design
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Extremely short face-to-face dimensions — ideal for space-limited installations
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Lightweight construction reduces piping system stress
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Lower installation and maintenance costs compared to flanged or lugged designs
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Bi-directional flow capability at maximum operating pressure
Superior Corrosion Resistance
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Chemically inert to virtually all acids, alkalis, solvents, and aggressive chemicals
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Suitable for handling hydrofluoric acid, sulfuric acid, nitric acid, aqua regia, and high-purity solvents
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Exceptional resistance to environmental stress cracking and thermal shock
Broad Operating Range
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Wide temperature range: -29°C to +200°C (depending on liner material)
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Pressure ratings: PN10, PN16, Class 150
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Full vacuum capability
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Fire-safe design available (API 607)
Easy Maintenance & Long Service Life
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Simple, robust construction with minimal components
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Non-stick, anti-adhesion surface properties prevent scale and sludge buildup
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Self-lubricating liner reduces operating torque
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FDA-compliant materials available for pharmaceutical and food-contact applications
Technical Specifications
Actuation Options
Applications
Our Wafer Lined Butterfly Valves are widely deployed across industries requiring corrosion-resistant, high-purity, and reliable flow control:
Semiconductor Manufacturing
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High-purity chemical delivery systems
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Wet etching, wafer cleaning, and photoresist processing
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Ultra-pure water (UPW) distribution and polishing systems
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CMP (Chemical Mechanical Planarization) slurry delivery
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Solvent process and Chemical Mechanical Planarization
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Sub-10nm microchip manufacturing processes
Wet Electronic Chemicals
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Transfer and control 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
Chemical & Petrochemical 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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Chlor-alkali processes and ion exchange resin systems
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
New Energy
Ultra-Pure Water Systems
Water & Wastewater Treatment
Why Choose Xinfulong Wafer Lined Butterfly Valves?
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Superior Corrosion Protection — Full fluoropolymer lining (PFA/FEP/PTFE) on all wetted parts provides chemical resistance superior to expensive alloys and far outlasts standard valves in corrosive lines
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Zero Leakage Performance — Bubble-tight bidirectional sealing with spherically molded liner design ensures zero leakage, critical for environmental safety and product purity
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Compact & Cost-Effective — Wafer design offers the shortest face-to-face dimensions, reducing installation space, weight, and cost compared to flanged or lugged designs
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Vacuum Service Capability — Blow-out proof one-piece disc/stem design ensures reliable performance under full vacuum conditions
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Cleanroom Manufacturing — Critical production processes carried out in Class 1000/10,000 cleanrooms, ensuring the highest levels of purity
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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 including spark testing, pressure testing, and dimensional inspection
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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 wafer lined butterfly valves to meet your specific requirements:
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Valve sizes from DN25 to DN600 (larger sizes available upon request)
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Lining materials: PFA, FEP, or PTFE
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Body materials: ductile iron, cast steel, stainless steel, or composite
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Disc materials: stainless steel with fluoropolymer encapsulation
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Pressure ratings: PN10, PN16, Class 150
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Connection standards: ASME, JIS, DIN, GB
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Actuation options: manual, pneumatic (double-acting or spring-return), or electric
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Control options: on/off or modulating with positioner
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Feedback devices: limit switches, position transmitters
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Fire-safe design (API 607)
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FDA-compliant materials for pharmaceutical applications
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ATEX compliance for explosive atmospheres
