Abstract: A valve and a method for making the valve, the valve including a valve housing with a central part and with two connection ends, wherein internally of the central part there is arranged a valve body in a valve seat and connected to a valve spindle that is arranged in a spindle guide stub on the valve housing. The method includes a tubular workpiece being provided with a cutout, a plate-shaped workpiece being provided that is plastically deformed to form a collar on it whereby a spindle guide stub is formed with a collar along its lower edge and a cutout in its upper surface. The spindle guide stub is laser welded on the tubular workpiece providing an internal welding seam running along the edge of the inner opening in the collar of the spindle guide stub, along the cutout and at the outer side of the tubular workpiece.

Abstract: A method and a system for stress-relieving annealing one or more first parts of a workpiece, wherein a second part of the workpiece contains heat-sensitive parts. A cooling jacket is placed around the part of the workpiece surrounding heat-sensitive parts such that the part{s) to be annealed are located outside the cooling jacket. The first part(s) are then heated individually by induction up to the annealing temperature of the material in a first annealing zone in the system while simultaneously cooling the second part of the workpiece located in the cooling jacket. After annealing, the workpiece is cooled in a cooling zone, as annealing and cooling of the workpiece occurs under a protecting atmosphere. The annealed workpiece is, e.g., connection ends on a valve housing where the connection ends are shaped by plastic deformation after mounting valve seats, valve body etc. in the central part of the valve housing.

Abstract: A valve and a method for making the valve, the valve including a valve housing with a central part and with two connection ends, wherein internally of the central part there is arranged a valve body in a valve seat and connected to a valve spindle that is arranged in a spindle guide stub on the valve housing. The method includes a tubular workpiece being provided with a cutout, a plate-shaped workpiece being provided that is plastically deformed to form a collar on it whereby a spindle guide stub is formed with a collar along its lower edge and a cutout in its upper surface. The spindle guide stub is laser welded on the tubular workpiece providing an internal welding seam running along the edge of the inner opening in the collar of the spindle guide stub, along the cutout and at the outer side of the tubular workpiece.