A diverter valve can be in the bathtub spout of a few showers, and you may need to replace the entire spout at a certain point. Other shower faucets will have a diverter valve for a third water control handle, and this would sit between the handles for cold and hot water. This implies you would remove an old diverter valve to install a fresh out of the box new one, much the same as when you are repairing a spigot leak.
Regards: Stacy M. Ship
Specialist: Ladki Patane ka Mantra Hindi Mein