That’s the valve I am thinking of but he says that is the foot valve. I have no problem at all with brakes, I have a problem with air supply to the other things in the trailer (tandem release, tire inflation and airbags). I have replaced all valves in the trailer and checked and double checked them.
Oh, by the way, I don’t have any backfeed coming out of the foot valve like in the video.
Any idea what valve I should check next?
Also, I don’t have a spare truck or trailer. I’d do both if I did, connect another truck to my trailer and another trailer to my truck.















