A regulator comprises a regulator valve and an actuator. The actuator is coupled to the regulator valve and comprises a control element for controlling the flow of fluid through the regulator valve. The regulator valve is equipped with a self-aligning valve port that includes a retaining portion, a biased portion disposed within the retaining portion, and a biasing member disposed between the retaining portion and the biased portion. The self-aligning valve port advantageously automatically adjusts to achieve sealed engagement with the control element of the actuator, thereby improving regulator performance.