Introducing our top-of-the-line Keystone Sanitary Butterfly Valve Liner, meticulously crafted by Sansheng Fluorine Plastics, leveraging the unbeatable synergy of PTFE and EPDM. This premier product stands as a testament to innovation and quality in the world of valve technology, offering unparalleled performance and reliability. At the heart of our Keystone Sanitary Butterfly Valve Liner lies the fusion of PolyTetraFluoroEthylene (PTFE) and Ethylene Propylene Diene Monomer (EPDM). This combination not only enhances the valve's durability and resistance against extreme temperature fluctuations ranging from -40℃ to 135℃ but also significantly improves its adaptability to various media, primarily water. Designed to fit port sizes from DN50 to DN600, this liner is a versatile solution applicable to a wide range of butterfly valve models, including the Wafer Type Centerline Soft Sealing Butterfly Valve and the Pneumatic Wafer Butterfly Valve. Our liner's compatibility with both wafer and flange-end connections ensures a seamless and secure fit, thereby eliminating potential leak paths. The material composition guarantees a black, robust seat that promises longevity and performance. The seat options available—ranging from EPDM, NBR, EPR, to PTFE, NBR, EPDM, and VITON—attest to our valve's flexibility in meeting the specific needs of your application.



The valve design, particularly the Lug Type Double Half Shaft Butterfly Valve Without Pin, represents a culmination of precision engineering. It maximizes flow efficiency while minimizing the maintenance required over its lifecycle. The combined properties of PTFE and EPDM in the valve seat not only ensure a tight seal but also resist a wide range of chemical agents, making it an ideal choice for myriad applications, from pharmaceuticals to food processing and beyond. Incorporating the keystone sanitary butterfly valve liner into your system is not just an upgrade; it's a leap forward in securing operational excellence and reliability. Sansheng Fluorine Plastics is committed to pushing the boundaries of what's possible in valve technology, providing solutions that are not only innovative but also practical and sustainable. Experience the difference in durability, efficiency, and performance with our Keystone Sanitary Butterfly Valve Liner—where advanced materials meet cutting-edge design.