Originally posted by sirrom
Tom,
If the above is correct and the valve uses air in the full on position then that is not an improved valve. The older and larger black valves that you mentioned did not use air in the full on position, only time air was being used was either between the on or off position.
I have the new valves, and as far as I can tell there is NO air being vented when the brakes are in the full-on position - pulsing happens only in the range of 10% -> 90% on.
Gordon