Abstract: A plasma arc torch is provided with an extended water-injection nozzle assembly characterized by the ability to produce a bevel cut or weld, and a cut or weld within a concavity on the top surface of a workpiece. The nozzle assembly includes a nozzle base, a swirl ring and an outer shell press-fit together to center and maintain the concentricity of the water-injection bore of the outer shell relative to the gas-constricting bore of the nozzle base. A radially exterior, frusto conical surface of the nozzle base and a radially interior, frusto conical surface of the outer shell define a fluid passageway therebetween for communicating a vortical flow of cooling fluid from an external source to the water-injection bore of the outer shell. Preferably, the vortical flow of cooling fluid further constricts the plasma arc extending outwardly from the electrode and along the longitudinal discharge axis defined by the plasma arc torch in the direction of the workpiece.