worm gear flanged butterfly valve specification:

1)Design Standard:API598
2)Nominal Pressure:150Lb-300Lb
3)Nominal Diameter:2''-48''
4)Flange Ends:ASME B16.5/16.47
5)Applicable temp: 46°C-550°C

6)Inspection & Test:API598
7)Material of Body:WCB CF8 CF8M etc.
8)Dribing mode:Gear, Electric etc.