Butterfly valve,PN 10 Body: Nodular cast iron,DIN GGG-40+epoxy,double flanged type face- to-face dimensions according to ISO 5752, series 20 (short series). Disc: Nodular cast iron,DINGGG-40+epoxy. Shafts:AISI-420 Stainless steel. Liner: EPDM. Operation: Gear-box.