HIGH PRESSURE FUEL INJECTOR SEAT THAT RESISTS DISTORTION DURING WELDING

A valve seat (16′) for a fuel injector (10) includes a main body (27) having a proximal and a distal end with at least one orifice (24) extending through the main body. A seating surface (22) is provided on the main body to receive a closure member (20) of a fuel injector such that when the closure member engages the seating surface, the at least one orifice is closed. A guide surface (36) is provided on the main body to guide movement of the closure member. An annular wall (26) extends in a cantilever manner from the main body at the distal end thereof and defines an outer peripheral portion of the valve seat. The wall is constructed and arranged to deform during welding at the wall so as to isolate effects of the welding from the seating surface and the guide surface.