Well, I'm not going to say that what you talk about doesn't exist but you won't likely see something like that used in this application. Why confuse things?
Any of the current and usual residential and light commercial hydronic zone valves you encounter are from Taco, B&G or Honeywell and all operate as I described. Yellow leads are the motor, reds are the end switch. Power= open with a spring return to closed. Switch closes when the valve is open.
-Hal
