I have a pressure problem. I have a single lever Franke faucet in the kitchen. Pressure from the faucet, both hot and cold, has dropped to the point that it is really annoying. This was not always the case. I disassembled the head and checked the filter. I disconnected the hose from the head at the sink top and checked that filter also. I have not disconnected anything under the sink, although I did open and close the valves. The pressure is fine everywhere else in the house. Any ideas?

It sounds like you have dirt 9Debris) in your faucet, here is what you need to do, close both hot and cold angle valves under the sink, remove the faucet handle and the cartridge put something on top of the faucet open both hot and cold angle valves for a few seconds one at a time it will flush out the debris out of the faucet, install the cartridge and the handle, good luck.

John