Abstract: An apparatus and/or process for applying a weld overlay to a nozzle or piping spool of complex configuration is disclosed.

Abstract: An apparatus and/or process for applying a weld overlay to a nozzle or piping spool of complex configuration is disclosed. In an exemplary embodiment, the welding apparatus comprises a mounting assembly having a plurality of magnetic foot pads, a tension support rod attached at one end to one of the magnetic foot pads, an upper attachment pad at the opposite end of the rod, and a bottom attachment pad attached to at least one other magnetic foot pad; a travel guide, the travel guide attached to the upper attachment pad at one end and the bottom attachment pad at the other end; and a head assembly attached to the travel guide, the head assembly having: i) a track ring assembly having an inner ring and an outer ring, ii.) at least two opposed weld heads attached to the inner track ring, iii.) at least one movable wire feed drive mechanism on the track ring, and iv.

Abstract: An apparatus and/or process for applying a weld overlay to a nozzle or piping spool of complex configuration is disclosed. In an exemplary embodiment, the welding apparatus comprises a mounting assembly having a plurality of magnetic foot pads, a tension support rod attached at one end to one of the magnetic foot pads, an upper attachment pad at the opposite end of the rod, and a bottom attachment pad attached to at least one other magnetic foot pad; a travel guide, the travel guide attached to the upper attachment pad at one end and the bottom attachment pad at the other end; and a head assembly attached to the travel guide, the head assembly having: i) a track ring assembly having an inner ring and an outer ring, ii.) at least two opposed weld heads attached to the inner track ring, iii.) at least one movable wire feed drive mechanism on the track ring, and iv.

Abstract: A back-up ring for use in a sealing assembly having an annular body with a first face and a second face and defining an axial thickness, the first face being adapted to be engaged by an annular seal ring, a first cut in the first face extending axially inwardly from the first face at an angle of less than 90° but greater than 0° to the first face, a second cut in the second face, the second cut being interconnected to the first cut and being at an angle thereto, the angle of at least a portion of the second cut being 90° or greater but less than 180° to the second face.