This is a great solution if you want a foot actuated kitchen faucet. The trick is to use a pull-out sprayer type of faucet so you can T the output from the foot pedal faucet into the pull out spray hose. That way you can run the kitchen faucet with either the original hand valve or with the foot pedals.
The important secret trick is to find a pull out spray faucet that is easy to T into. You want to find a faucet that has a 1/4 copper pipe coming out of the valve body that the pull out spray hose attaches to. This way you can cut that tube and use a compression T fitting to connect the foot pedal faucet. Kohler makes a pull out spray faucet that is ideal for this application (Model # K-R13963-SD-VS; Available at Home Depot). The Kohler unit has a push on adapter that connects to the 1/4" pipe that the hose screws into. You can actually pull off this adapter, so you don't even need to cut the 1/4" pipe coming out of the faucet body.
The valves themselves are great, and the quality is good and sturdy. The only problem that I had was not the valves them selves, rather the faucet to hook it up to. Most of the faucets were expecting to mix the cold and hot together, not inside the valve itself, so if the since outlet from these valves were hooked up to the cold inlet for the faucet, and the hot valve was open, even slightly, the water would come out the faucet's hot inlet. Not a huge problem, but it did make me nervous to always have the valves correct on the faucet, so I opted for a rigid deck faucet, also from Chicago Faucets and bought here on amazon.
Fast delivery. Best price by at least $30.00 - $150.00 compared to competitors. I actually only needed the pedal assembly. But cost was about the same as the whole unit. Will save rest of unit for repair parts.