The Stovebolt Site Forums The Shop Area Driveline Residual valves, proportioning valve etc.

So it is interesting that the proportioning valve ratio has not been mentioned. I believe there are a variety of ratios available . Another interesting design feature Chrysler used on their minivans was an adjustable proportioning valve that was linked to to the rear suspension. I found it worked flawlessly with no difference in braking between a light load and a full van.