Abstract: Removal of cartridges or cores and sleeves from valve bodies is facilitated with a tool having a threaded rod extending through a base and through a spacer which is rotatable relative to the rod and to the base. The rod is provided with a means at its end, at the side of the base toward the spacer by which the tool may be attached to the core of a valve. Rotation of the base relative to the rod draws the valve core up into the spacer whose end is placed in abutment with the valve body. The sleeve part of the valve cartridge is removed with the aid of a tube which is carried by the base and extends therefrom so that its axis is substantially parallel with the axis of the threaded rod. The end of the tube away from the base is split along its length from the end of the tube so that the tube is divided into segments which may be spread apart.