A material supply assembly comprising: a valve assembly including: an outer valve member and an inner valve member, the outer valve member including an outer discharge section, the outer discharge section including a plurality of first openings therein, the inner valve member including an inner discharge section, the inner discharge section including a plurality of second openings therein; the inner valve member being rotatably disposed on the outer valve member and rotatable relative to the outer valve member between a closed position at which the valve assembly is closed and an open position at which the valve assembly is open, the plurality of first openings being aligned with the plurality of second openings at the open position; a base assembly having a receptacle with an inlet and an outlet, the inlet being configured to receive at least a portion of the valve assembly therein and the outlet being configured to pass material therethrough, characterized in that the base assembly is including a base structure and an actuator, the actuator being movable relative to the base structure; an engagement structure between the outer valve member and the actuator, the engagement structure is including a plurality of spaced apart first engagement members on one of the outer valve member and the actuator and a plurality of complementary configured second engagement members on another of the outer valve member and the actuator, the first engagement members being configured to lockingly engage the second engagement members to prevent relative movement between the outer valve member and the actuator; and a locking structure between the inner valve member and the base structure, the locking structure is including a plurality of spaced apart first locking members on one of the inner valve member and the base structure and a plurality of complementary configured second locking members on another of the inner valve member and the base structure, the first locking members being configured to lockingly engage the second locking members to prevent relative movement between the inner valve member and the base structure; whereby movement of the actuator relative to the base structure moves the outer valve member relative to the inner valve member to operate the valve assembly. an outer valve member and an inner valve member, the outer valve member including an outer discharge section, the outer discharge section including a plurality of first openings therein, the inner valve member including an inner discharge section, the inner discharge section including a plurality of second openings therein; the inner valve member being rotatably disposed on the outer valve member and rotatable relative to the outer valve member between a closed position at which the valve assembly is closed and an open position at which the valve assembly is open, the plurality of first openings being aligned with the plurality of second openings at the open position; a base assembly having a receptacle with an inlet and an outlet, the inlet being configured to receive at least a portion of the valve assembly therein and the outlet being configured to pass material therethrough, characterized in that the base assembly is including a base structure and an actuator, the actuator being movable relative to the base structure; an engagement structure between the outer valve member and the actuator, the engagement structure is including a plurality of spaced apart first engagement members on one of the outer valve member and the actuator and a plurality of complementary configured second engagement members on another of the outer valve member and the actuator, the first engagement members being configured to lockingly engage the second engagement members to prevent relative movement between the outer valve member and the actuator; and a locking structure between the inner valve member and the base structure, the locking structure is including a plurality of spaced apart first locking members on one of the inner valve member and the base structure and a plurality of complementary configured second locking members on another of the inner valve member and the base structure, the first locking members being configured to lockingly engage the second locking members to prevent relative movement between the inner valve member and the base structure; whereby movement of the actuator relative to the base structure moves the outer valve member relative to the inner valve member to operate the valve assembly.