Should be one in the kitchen faucet cold water line. I junked what came with the unit and put in a moen. There wasn't one in my bathroom sink faucet which I am waiting for it to die so I can put something better there.
2012 F350 6.7 L dually, 2013 3800RE with 6 pt leveling, Sumitomo 17.5" load range h tires, Samsung 18 cu ft residential fridge, 8k Morryde I.S. with disc brakes. Full timing since 2012.