Stainless steel lined fluorine butterfly valve, acid and alkali resistant anti-corrosion manual flange valve DN400

Description :

This product is a high-performance stainless steel fluorine lined butterfly valve designed specifically for harsh corrosive media conditions. The valve body is made of high-quality 304/316L stainless steel casting or forging, with excellent mechanical strength and structural stability; The lining is made of high-purity polytetrafluoroethylene (PTFE/F46) material, which utilizes its excellent chemical inertness to effectively isolate the contact between the medium and the metal valve body, thereby achieving perfect tolerance to strong acids, alkalis, salt solutions, and various organic solvents, completely solving the pain points of traditional metal valves being prone to corrosion and short service life.

From the details in the picture, it can be seen that the valve has a diameter of DN400 and belongs to large-diameter pipeline control components. It is suitable for large flow scenarios such as large-scale chemical production lines, water treatment systems, and metallurgical slurry transportation. The valve plate is also precision machined and fully covered with fluorine lining to ensure smooth flow channels without dead corners, reduce fluid resistance, and prevent medium from accumulating on the wall. The sealing pair adopts a soft sealing structure, and when closed, the butterfly plate is tightly attached to the valve seat, achieving zero leakage standards and meeting strict environmental and safety requirements.

The driving method adopts manual turbine box transmission, equipped with red high-strength cast iron handwheel. Through gear reduction and torque increase, the operator can easily open and close the large-diameter valve, with clear hand feel and positioning function, making it easy to accurately adjust the flow rate. The blue actuator shell at the top is not only aesthetically pleasing, but also serves to protect the internal transmission components from rain and dust erosion, making it suitable for installation in outdoor and harsh industrial environments.

This product is widely used in industries such as petrochemicals, pharmaceutical engineering, power desulfurization and denitrification, seawater desalination, paper printing and dyeing. Specially recommended for use as a cutting or throttling device in pipeline systems with highly corrosive media such as hydrochloric acid, sulfuric acid, hydrofluoric acid, aqua regia, etc. The flange connection method complies with the national standard GB/T, with convenient installation and maintenance, and strong interchangeability. The overall design balances corrosion resistance, high strength, and ease of operation, making it a cost-effective alternative to expensive imported alloy valves. With low long-term operating costs and long maintenance cycles, it is an ideal supporting equipment for industrial anti-corrosion pipeline systems.

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