Freture Techno Pvt. Ltd. is a reliable lined valve company offering high-quality PTFE and PFA lined valves for industries handling corrosive, aggressive and chemically reactive fluids. Our PTFE lined valve range is designed to provide excellent chemical resistance, reliable sealing and long-term performance in demanding process applications. As experienced PFA lined valves manufacturers, we...
A pulp and paper mill runs on chemistry as much as it runs on fiber. Chlorine dioxide bleaches the pulp, caustic soda washes it, sulfuric acid and sodium chlorate feed the bleach generation plant, and black liquor carries dissolved lignin back to the recovery boiler. Every one of these streams is corrosive enough to attack an unprotected valve body within months. Lined valves — carbon...
Once a plant decides that a lined valve is the right solution for a corrosive or abrasive application, the next question is almost always: which lining material is right for this specific job? With PTFE, PFA, FEP, and rubber all commonly available, and each offering different strengths in temperature tolerance, chemical resistance, and abrasion handling, choosing the wrong lining can mean early...
What Makes a Valve "Teflon Lined"?
A teflon lined valve consists of a metal body — typically ductile iron, carbon steel, or stainless steel — with an internal barrier of PTFE bonded or compression-molded into every wetted surface. The metal shell provides structural strength and pressure containment; the lining provides the chemical barrier. Neither material alone would work well...
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