... Aluminum bronze 4.Stem: SS (One Piece with Pin) Single Flange Butterfly Valve 1.Size: DN500 to DN10002.Body: CI DI3.Disc ... : PN107.Surface: Electric Fussion Epoxy Powder Coated 8.Actuator: Hand Lever Worm Gear Penumatic Electric 9.Flange drilling standard: BS4504 BS10 ... , air, vapor, food, medicine, acids, alkalis, salts, paper making etc. Single Flange Butterfly Valve