Width range of DTI butterfly valve. Body: SS304.316.316L material out from precision CNC milling machined. Body can be changeable. And low torque. BS. SMS. DIN 3A weld and male/male end.Clamp end. Disk: Out from full machined,high polished. Ra less thatn 0.6 µm. 9.5mm and 8 x12mm ,12 x 12mm head for USA And Europe required. Electro polished ad PTFE coating can be Required. Handle:Different nylon re-force and stainless steel handle gripper, pull, Press type. From 2 Position-12 Position, Design for your width range and beautiful choice.