Description: D343H-600LB pressure metal sealing butterfly valve nominal diameter: DN40mm ~ DN1000m Nominal: 150Lb ~ 600Lb Applicable temperature: -29 ℃ ~ 550 ℃ D343H-600LB pressure metal sealing butterfly valve Applicable medium: air, water, steam, gas and acids, bases, salts with a major weak corrosive media and other parts of the material: WCB, CF8, CF3, CF3M. 1, designed and manufactured in accordance with this butterfly API609 standard. 2, inspection and testing according to API598 standard. 3, the end flange dimensions according to ANSI B16.5a-1992 standard. 4, Drive: worm drive