A dispensing system for a plural component mixture includes a dispensing device, a first container which may or may not be flexible, and separate flexible second containers for each of the components. The second containers are adapted to be placed within the first container. The first container is adapted to be held by an operator during dispensing of plural component mixture from the dispensing device. Separate conduits are coupled between the second containers and the dispensing device. The dispensing device includes a passageway for the passage of each respective component through the dispensing device. Each passageway includes a valve. An actuator controls the valves, thereby controlling the passage of the respective components through the dispensing device. A second valve is coupled in the conduits between the respective components' sources and the dispensing device. The second valve includes an inlet port for each component, an equal number of outlet ports, and an inlet port for a material for flushing the plural components from at least portions of their respective conduits and the mixed plural components from the dispensing device. The second valve has a first state in which each inlet port for a respective one of the plural components is coupled to an outlet port to provide the plural components to the dispensing device when the valve means is in the first state. The second valve also has a second state in which the inlet port for the material for flushing the plural components from at least portions of the respective conduits and the mixed plural components from the dispensing device is coupled to the outlet ports.