A plural component applicator comprising: a first component inlet configured to receive a first component from a first delivery line; a second component inlet configured to receive a second component from a second delivery line; a nozzle configured to receive, mix and deliver the first component and the second component through a nozzle outlet; and a valve configured to rotate between a closed position and an opened position to allow flow of the first component and the second component to the nozzle, and when the valve is in the closed position, to automatically purge the nozzle of the first component and the second component, the valve comprising: an air path that receives air flow from an air source; and a purge path fluidically coupled to the air path that directs a portion of the air flow into the nozzle to purge the nozzle of the first component and the second component, when the valve is in the closed position wherein the purge path comprises: a first component purge path configured to direct a first portion of the air flow to a first nozzle component inlet; a second component purge path configured to direct a second portion of the air flow to a second nozzle component inlet; and a nozzle purge path configured to direct a third portion of the air flow to an air inlet of the nozzle. a first component inlet configured to receive a first component from a first delivery line; a second component inlet configured to receive a second component from a second delivery line; a nozzle configured to receive, mix and deliver the first component and the second component through a nozzle outlet; and a valve configured to rotate between a closed position and an opened position to allow flow of the first component and the second component to the nozzle, and when the valve is in the closed position, to automatically purge the nozzle of the first component and the second component, the valve comprising: an air path that receives air flow from an air source; and a purge path fluidically coupled to the air path that directs a portion of the air flow into the nozzle to purge the nozzle of the first component and the second component, when the valve is in the closed position wherein the purge path comprises: a first component purge path configured to direct a first portion of the air flow to a first nozzle component inlet; a second component purge path configured to direct a second portion of the air flow to a second nozzle component inlet; and a nozzle purge path configured to direct a third portion of the air flow to an air inlet of the nozzle. an air path that receives air flow from an air source; and a purge path fluidically coupled to the air path that directs a portion of the air flow into the nozzle to purge the nozzle of the first component and the second component, when the valve is in the closed position wherein the purge path comprises: a first component purge path configured to direct a first portion of the air flow to a first nozzle component inlet; a second component purge path configured to direct a second portion of the air flow to a second nozzle component inlet; and a nozzle purge path configured to direct a third portion of the air flow to an air inlet of the nozzle. a first component purge path configured to direct a first portion of the air flow to a first nozzle component inlet; a second component purge path configured to direct a second portion of the air flow to a second nozzle component inlet; and a nozzle purge path configured to direct a third portion of the air flow to an air inlet of the nozzle.