I disassembled diverter valve from Sprayer and Faucet (I wouldn't have had to from faucet) so that I could put a new holder for the sprayer on the sink. No other parts are new. And now I have low water pressure from both hot and cold. Should the diverter valve be replaced?

First, remove the aerator to make sure that no debris is restricting the flow.

Where is the aerator?

The aerator is at the end of the spout[ where the water comes out] it is probably clogged.

Hi Guys:

YUP! Here is a picture of an aerator... at the end of a spout on a faucet. Remove it and run water without the aerator in place. If water runs full pressure/volume then clean the aerator and replace and hopefully you are all set, OK?

If that fails to work let us know and we'll see what's next...

Good luck!

Mark