July 15, 2013
No, however, you will notice two large brass cutoff valves on each of the input lines. They are the straight slotted inset screws on each side. They are meant to cutoff the flow of water in case you need to remove the center cartridge to replace any seals in the future. If you have too much volume, you could spin those in to fine tune the volume of water. If you have too little volume, you could check to make sure they are all the way out, they should be set the way from the factory. They weren't meant for that, but could be used for that.
Hope this helps
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