Hi

What are the 10 valve types that you have? If as you say there are only 10 types, then it will be easier to fix the combobox values rather than trying to extract from the data.

Also, can you update your file to:
1) remove all the data from columns BV:BW. All these formulas will be adding to the size.
2) Put in some sample data. Nothing confidential, but enough that will allow a test of both the filter to work, and the graphs to update.

rylo