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Durable Center Flanged Butterfly Valve for High-Pressure Applications. Double Eccentric Self-Tightening: Reliable self-tightening sealing function ensures tighter seal when closed. Adjustable T-Shaped Seal: T-shaped rubber seal ring adjustable via screw to extend service life. High-Strength Butterfly Plate: Large flow area minimizes resistance and reduces energy consumption. Corrosion-Resistant Materials: Ductile iron body with epoxy resin paint prevents rust and contamination. ISO9001 Certified Quality: Strict quality control system ensures compliance with international standards. Flexible Customization Options: Supports customization from samples, designs, and full customization.