| 摘要 |
A dispensing applicator for reactive components is provided that comprises 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, where there is a passage in each of the at least two flow paths that have one or more exit openings in a peripheral wall of each passage. The dispensing applicator further comprises a resilient flow control band surrounding 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 the other component. The resilient flow control bands may be positioned anywhere along the flow path leading to a mixing chamber for the reactive components.
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