Electric heater "valve"? Do you mean an electric controled valve? And on which heater? the one on the chassis or the furnace in the coach? I doubt that, in either case, CAmon would be using a propriatory OEM part. So if the heater is on the chassis, I would think that a Ford or Chevy dealer could help you. With the seal, I again would think that any RV dealer with a decent service department could help you.
Kayo Full timer since 2003
2014 Prime Time Sanibel 3501. 2013 Silverado 3500HD diesel dually. Seasonal NPS Park Ranger USMC 0302