Anti-crossover dispensing applicator

A dispensing applicator for reactive components comprising:

• a valve assembly having at least two flow paths being separate from each other such that at least a first component in a first flow path and at least a second component in a second flow path may not mix in the valve assembly;
• a passage in each of at least first and second flow paths, the passages having a peripheral wall with one or more exit openings in a peripheral wall of each passage;
• and
• a resilient flow control band extending around the periphery of each passage and the one or more exit openings in the peripheral wall of the each passage to prevent cross-over flow of one component into the flow path of another component.

A dispensing system which dispenses a product of the mixing of at least first and second components that pass through separate flow paths to a mixing chamber in which the components are mixed, the dispensing system comprising:

• a mixing chamber;
• at least first and second flow paths leading to the mixing chamber;
• a valve in each flow path for controlling the flow of its respective component, each valve comprising a valve member having a passage therethrough opening to a port in the surface of the valve member;
• a valve cup surrounding at least the portion of the valve member including the port, and having a valve opening therein communicating with the mixing chamber, the valve member and the valve cup being relatively movable between a closed position in which the valve member closes the valve opening in the cup member, and an open position in which the valve member is spaced from the opening in the valve cup;
• and a one-directional flow band extending around the valve member and resiliently covering the port to prevent back flow that could permit mixing of the two components outside of the mixing chamber.