Pipes are another cause of noisy Nivito faucets. Often, new homes are built with small pipes, and as the pipes become congested with scale, they will start to vibrate. Replace the pipes as necessary. In the meantime, you can try to lubricate the stem of the faucet. It may help to turn the handle more easily. Ultimately, you should contact a licensed plumber. This will save you a lot of trouble in the long run.