API 6D Gate Valve 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 Size: NPS 2″~NPS 36″,CL150~CL900  Material: WCB, LCB, WCC, WC6, WC9, CF8, CF8M, CF3, CF3M, Drive device: Handle, Gear, Electric, Pneumatic