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Double-Flange Rubber-Lined Butterfly Valve serves as an "on-off" or "regulating" valve for fluid control in industrial piping systems. Its key feature is the integral vulcanized rubber lining on the inner wall of the valve body, which significantly enhances durability and sealing performance.The securely bonded rubber lining prevents shifting or bulging, ensuring high reliability and durability. The term "flange" refers to the connection method at both ends of the valve; equipped with flanges, it connects to corresponding flanges on the pipeline via bolts—a highly secure arrangement that is particularly well-suited for high-pressure, large-diameter piping.It is suitable for applications involving water, wastewater, gases, and mild chemical systems.

The Wafer-type backrest-seated butterfly valve is a compact, mid-performance fluid control solution. It is a robust industrial valve designed specifically for demanding operating conditions. By rotating an internal disc to regulate flow or provide shut-off, the valve functions as a precision on/off switch within piping systems. Its hard-backed seat design effectively prevents deformation and reduces operating torque, thereby significantly extending service life in harsh environments. For systems transporting clean water or air at ambient temperature and pressure, the concentric hard-backed soft-seated wafer butterfly valve offers a more cost-effective alternative.

The Wafer-Type Soft-Seated Butterfly Valve is a cost-effective, easy-to-maintain valve featuring a soft seal. It utilizes a detachable, core-less (soft-backed) rubber seat design with a tongue-and-groove configuration; this ensures the seat is securely anchored to the valve body—preventing deformation—while also facilitating convenient in-line replacement. Its lightweight wafer-style structure, excellent sealing performance, and ultra-low operating torque make it a preferred choice for fluid control and water system piping. It is widely used in water treatment plants, power plants, steel mills, and the paper, chemical, and food industries for water supply, drainage, and gas pipeline applications.

The wafer-style vulcanized butterfly valve represents an outstanding example of integrated seat and body design. Utilizing an advanced high-temperature, high-pressure vulcanization process, high-performance rubber is securely bonded to the valve body's inner cavity and the disc's outer surface, completely isolating the medium from metal components—making it particularly suitable for highly corrosive applications. This vulcanization process effectively eliminates common issues found in traditional valves, such as seat stretching, deformation, and detachment during frequent cycling. The seamless bond between the seat and body not only enhances sealing stability but also significantly reduces friction between the disc and seat as well as operating torque, thereby extending the valve's service life.