Our company owns the 3.5m large size vertical machine for processing for the large diameter valves. We have processed many large diameter valves with this vertical lathe， such as DN2600 butterfly valve.
Vertical lathe is a large mechanical equipment for machining large and heavy workpiece with large radial size and relatively small axial size. For example, the cylindrical surface, the end face, the conical surface, the cylindrical hole, the tapered hole, etc. It can also be used for machining thread, spherical surface, profiling, milling and grinding with additional devices. Compared with horizontal lathe, the workpiece is clamped inside the clip decoration of horizontal lathe. The vertical axis of the vertical lathe is vertical, and the worktable is in the horizontal plane, so the clamping and alignment of the workpiece is more convenient. This layout reduces the load of spindle and bearing, so the vertical lathe can maintain working accuracy for a long time.