Size: DN50-DN2000 Rating: 1.0Mpa-4.0Mpa Body Materials: WCB, Ductile iron, CF8, CF3, CF8M,CF3M etc Metal Seated Butterfly Valve 1)Product range1 Size: DN50-DN20002 Rating: 1.0Mpa-4.0Mpa 2) Design standard:Design: AWWA C504-2006Test: AWWA C504-2006 3) Body Materials: WCB, Ductile iron, CF8, CF3, CF8M,CF3M etc 4) Application: PetrochemicalWastewater treatmentDirking Water industry ,etc 5) Design ...