I purchased this faucet in 2009.  I loved the design and worked perfectly.  Then, the sprayer stopped working, 7 years after it was first installed.  Fortunately, I saved the info from the box with model #... I called the 800# and the rep knew exactly what the problem was and free of charge sent me the part (cartridge & diverter). When a handyman was in the house for a different issue altogether, I had him install the new part.  It has been perfect ever since.  Price Pfister stands by their products. Thank You!!