From the moment I installed this faucet, every time I turned it on it made a clunk sound which turned out to be the diverter valve for the sprayer. I called Delta CS and they sent new O rings and a new diverter valve and I still get the same sound after replacement. Called CS yet again and they are sending me a different faucet at no charge. I'll give a high grade for their Customer Service, but a poor grade on this faucet.