I have looked but . . . .
OK, so the valve stem is very near the rim, and parallel to the axle. 5.00x5 wheel on the RV7. While is it probably best to remove the wheel pants, I want a way to access more often. So read on.
I am looking for a straight valve stem adapter that is open (not closed) type. I have searched via google and images to find one and surprised in not finding a small diameter open style. BTW - the open style has a rigid center that will open the Schrader valve, and allow two way airflow.
Here is a picture of a steel one with a threaded attachment. The final tool will have a rigid 6" tube terminated with this adapter so it can be pressed onto the stem through a hole in the wheel pants, read the pressure then add air with a valve connected to the air supply.
Does any one know where to find such an adapter?