Punch Out multiple CPA's for one supplier

Good Afternoon,

We are currently setting up punch outs for our suppliers. We have successfully done 4 so far but we have run into a stumbling block.  We have a supplier that  has 3 CPA's attached to it. We have one CPA that covers everything in their catalog, 1 for the valves from a specific manufacturer, and one for pumps from a specific manufacturer.  How can we tie the two smaller contracts to the items in the catalog?  The only way I can think to do this would be to create 3 separate punch outs. Is there a way to setup just