A dispensing assembly for an aerosol system (20) for dispensing liquid material. The dispensing assembly comprises a base member (38) defining an alignment groove (82), an actuator member (30) defining a plurality of finger portions (60), an outlet member (32) defining an outlet opening, a selector member defining a flange portion and a selector threaded portion (72), and a collar member (36) defining an opening surface and a collar threaded portion. The outlet member (32) is arranged within the plurality of finger portions (60) such that the actuator member (30) and the outlet member (32) define a dispensing path in fluid communication with the outlet opening. The collar member engages the actuator member such that the opening surface is adjacent to the finger portions. The selector threaded portion (72) engages the collar threaded portion (62). The flange portion of the selector is arranged within at least a portion of the alignment groove. Angular rotation of the selector member relative to the collar member displaces the collar member to deform the outlet member (32) and thus alter a cross-sectional area of the outlet opening.