Keystone Butterfly Valves: PTFE+EPDM Seals for Industrial Use

In the realm of industrial valve solutions, the innovative PTFE+EPDM resilient butterfly valve seal stands as a hallmark of engineering excellence, tailored to meet the rigorous demands of diverse fluid management applications. At Sansheng Fluorine Plastics, we specialize in providing state-of-the-art valves that incorporate the renowned durability and flexibility of Keystone butterfly valves, ensuring unmatched performance even under the most challenging conditions.



Constructed from the robust combination of PTFE (Polytetrafluoroethylene) material and EPDM (Ethylene Propylene Diene Monomer) rubber, these seals are designed to deliver exceptional resilience and longevity. This unique blend offers superior resistance against extreme temperatures, ranging from -20° to +200° Celsius, making it an ideal choice for handling a wide spectrum of media, including water, oil, gas, base oil, and even aggressive acids. The versatility of our valves, available in sizes from DN50 to DN600, caters to a broad spectrum of industrial applications, from chemical processing to water treatment facilities. Our Keystone butterfly valves are distinguished by their wafer-type centerline soft sealing, pneumatic operation, and the option for lug or flanged connections, accommodating a variety of installation requirements. Adhering to international standards such as ANSI, BS, DIN, and JIS, these valves are customizable in terms of color, hardness, and connection type, ensuring a perfect fit for your specific application needs. Whether you’re dealing with high-pressure environments or corrosive substances, the full PTFE-lined valve seat offers unparalleled reliability and safety, making it a preferred choice for professionals seeking efficient and durable valve solutions.