Nailed it! Darrell, you called it. I think that's exactly what this is. I, too, remember those and remember even seeing a three dispenser model for whole, fat-free and chocolate milks. There was a pinch valve with a heavy stainless steel weight on it and you just raised the weight to pour the milk. Talk about memories! I've not seen one of these in a coon's age and wonder if you can even get the milk 'cartridges' anymore for these...
RCD