When dealing with extremely corrosive fluids like concentrated sulfuric acid or caustic soda, standard metal valves-even stainless steel-will fail. Our PTFE lined butterfly valve provides a high-performance, cost-effective solution by lining the entire internal body and disc with a uniform layer of PTFE or PFA. This PTFE lined butterfly valve is virtually immune to chemical attack, providing an inert barrier between the media and the metal casting. We use a high-temperature molding process to ensure the lining is free of bubbles and cracks, with an incredibly smooth surface that also offers self-lubricating properties, resulting in a lower operating torque and longer seat life.
In our specialized lining workshop, we have mastered the art of preventing "liner collapse" in vacuum conditions, a common failure in generic products. We use a dovetail groove design and optimized lining thickness to ensure the PTFE lined butterfly valve remains stable under negative pressure. As a source factory with over 20 years of expertise, we provide a "One-Stop" corrosion solution. You can procure this PTFE lined butterfly valve along with our lined check valves and strainers to ensure consistency across your entire acid-handling line. Every unit is spark-tested at high voltage to ensure the lining is 100% pinhole-free before it leaves our Soho manufacturing base.
Technical Specifications
Lining Material: PTFE (F4), FEP (F46), PFA
Body Material: Ductile Iron, WCB, SS304
Size Range: DN50 - DN1200
Pressure Rating: PN6, PN10, PN16
Operating Temp: -20°C to 180°C
Application Areas
Critical for the chlor-alkali industry, fine chemical processing, pesticide manufacturing, and industrial acid-handling facilities.
Factory Customization & OEM
We support full customization for the PTFE lined butterfly valve, including specific face-to-face lengths and specialized actuator mounting (ISO 5211). We hold the TS license and can supply products according to GB, API, or DIN standards.
Quality Control & Packaging
In addition to pressure testing, we perform 100% spark testing on the lining. Packaging includes custom foam supports to prevent the PTFE seat from deforming during international shipping in plywood crates.
FAQ
Q: Can this valve handle high temperatures?
A: Yes, our PTFE lined butterfly valve is rated up to 180°C depending on the specific lining and pressure conditions.
Q: Is the lining replaceable?
A: While the design is integrated for maximum sealing, we offer repair kits and guidance for long-term maintenance.
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