Pneumatic Fluorine Lined Control Valve

2025-06-19

A Pneumatic Fluorine Lined Control Valve integrates pneumatic actuation with fluoropolymer lining, offering robust solutions for corrosive fluid regulation in harsh industrial environments. Driven by compressed air, the valve utilizes a piston or diaphragm actuator to position a fluorine-lined plug, while its body and internal components are coated with PTFE, PFA, or FEP to resist aggressive chemicals, acids, and solvents.

Core Structural Advantages

Corrosion Resistance: Fluoropolymer linings (thickness 2-5mm) provide inert protection against media like sulfuric acid, hydrochloric acid, and alkaline solutions, making it ideal for chemical processing and pharmaceutical manufacturing.

Tight Sealing System: The plug-seat interface features dual-sealing design (soft PTFE or metal-to-metal with fluorine insert), achieving Class VI leakage per API 598 to minimize fugitive emissions.

Pressure Balance Design: Pneumatic actuators with volume boosters ensure stable positioning under high-pressure differentials (up to 1.6MPa), while the lined body reduces stress corrosion cracking risks.

Operational Efficiency

Fail-Safe Functionality: Air-to-open/close configurations with spring return enable emergency shut-off during air supply failure, compliant with safety integrity level (SIL) standards.

Flow Characteristics: Replaceable trims (linear/equal percentage) adapt to process needs, with high flow capacity (Cv value up to 200) due to streamlined fluorine-lined passages.

Low Maintenance: Non-stick fluoropolymer surfaces prevent media adhesion, reducing cleaning cycles and extending service life in slurry or viscous fluid applications.

Industrial Applications

Chemical Synthesis: Controls chlorinated hydrocarbons in pesticide production lines, with PFA lining resisting 260℃ high-temperature corrosion.

Semiconductor Manufacturing: Regulates ultrapure water and etching gases in wafer fabrication, meeting SEMI standards for particle-free operation.

Wastewater Treatment: Manages acidic effluents in electroplating plants, with ETFE lining enduring pH 1-14 ranges and abrasive particulates.

Food & Beverage: Hygienic designs (316L stainless steel with PTFE lining) control citric acid and caustic cleaning solutions in dairy processing.

This valve combines pneumatic precision with fluorine chemistry to address critical challenges in corrosive fluid control, offering a balance of safety, durability, and process adaptability for modern industrial systems.

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Ms. Iris

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