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Wear-Resistant Concentric Butterfly Valve Lithium Battery Industry. Wear-Resistant Design: Features lock type seat and spherical sealing surface for mining and slurry applications. High Pressure Capacity: Max working pressure up to 20 Bar with full vacuum capability. Multiple Drive Options: Available with hand lever, gear box, pneumatic, or electric actuator. Customizable Materials: Body in Ductile Iron/CF8/CF8m; Seat in EPDM/NBR/PU/PTFE. Field Replaceable Seat: Fully isolates body and shaft from media for easy maintenance. Extensive Size Range: Nominal diameter from DN32 to DN2000 (1" to 80"). Certified Quality: ISO9001, CE, BV Marine, ATEX, and TS certified manufacturing.