Coffee dispense valves

A consultancy project on behalf of a foodstuffs manufacturer, these items are disposable coffee pumps which had been behaving irregularly. The result was that my client’s dispense systems were delivering coffee of varying strength in restaurants all over the US.

Could a replacement system be designed, in a few weeks, which would fulfil the existing specification and also provide a high level of dispense repeatibility? See the next image for the answer.