API 6D expanding gate valve Product design and scope Design standard:API 6D Length of structure:API 6D Flange connecting end:ASME B16.5/ASME B16.47 Butt welding connecting end:ASME B16.25 Wall thickness:ASME B16.34 Inspection and test:API 6D Pressure and temperature rating:ASME B16.34 Product scope:NPS 2â?³~NPS 36â?³,CL150~CL900 Main body material:WCB,LCB,WCC,WC6,WC9,CF8,CF8M,CF3,CF3M,A890 4Aetc. Drive device:handle, bevel gear, electric, pneumatic, etc. -