Product Overview
The PTFE/PFA Lined Check Valve is specially designed for highly corrosive media, including strong acids, alkalis, chlorine-based fluids, solvents, and high-purity chemical liquids.
The valve’s internal wetted surfaces—body, disc, and sealing areas—are fully lined with PTFE or PFA, ensuring complete isolation from the metal body and providing maximum corrosion resistance.
It delivers reliable backflow prevention and long service life in chemical plants, chlor-alkali systems, pharmaceutical pipelines, wastewater treatment, and corrosion-critical processes.
Product Advantages
● Maximum Corrosion Protection: Ideal for acids, alkalis, solvents, and aggressive chemicals.
● Zero Metal Contamination: Suitable for high-purity and pharmaceutical systems.
● Long Service Life: Fluoroplastic lining is resistant to wear, chemical attack, and scaling.
● Low Maintenance: Minimal moving parts; internal lining prevents deposits.
● Reliable Backflow Prevention: Ensures safe operation in sensitive chemical processes.
Size Range
● DN25 – DN400
Pressure Rating
● PN10 / PN16
Standards
● Design Standard: HG/T 3704（Chemical corrosion-resistant valve standards）/ EN 13709
● Test Standard: EN 12266 / ISO 5208
● Flange Standard: HG/T 20592 / EN 1092-1 / ASME B16.5
Industry Applications
● Chemical processing and corrosive fluid pipelines
● Chlor-alkali and acid-alkali production units
● Pharmaceutical and high-purity media systems
● Wastewater, acidic effluents, and industrial drainage
● Solvent and oxidizing fluid systems
● Corrosive gas/liquid backflow prevention
Tianjin Dingliu valve Industry Co., Ltd. is a high-tech enterprise specializing in the valve and automation industry.
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