Sorry for the delay. All faucets need to be after the CSV. They can be before the pressure tank and pressure switch, but must be after the CSV. This is hard to do with the PK1A as the CSV, tank, and switch are all together.
You can use a faucet that is located prior to the CSV but you should either use is very lightly, like to fill a dog water bowl, or make sure it is using all the water the pump can produce, so the pump does not cycle.