China High Quality Pneumatic Butterfly Valve Suppliers – Rubber Seat Butterfly Valve,DI,CI,Ductile Iron, Cast Iron, DN2000,DN1800,DN1600,DN1400,DN1200,DN1000,DN800 – UNIQUE

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The rubber seat can be replaced. Correcting holes are made on flange according to standard, easy correcting during the installation. Through-out bolt or one-side bolt used. Easy replacing and maintenance. Shaft and disc connected by pin, torque screw or non pin, to achieve the opening and closing.