The new Keurig, which costs about four times as much as a standard load-press-drink pod machine, is set to challenge Nestlé’s Vertuo line of big-cup coffee machines in the U.S. Nestlé introduced that device a few years ago after finding that few Americans drink the diminutive espresso that made the Nespresso brewer a hit.
Hunter valves incorporate the metering ports in the diaphragm assembly. In the plastic center of the diaphragm assembly, there are small holes that meter (restrict) the amount of water that can flow to the top of the valve. If debris clogs these holes, the flow is restricted too much and the valve can either close real slow or stay open ...