Flow rate limits are listed in AMS2432, Shot Peening, Computer Monitored with ±10% Process Tolerances Shutdown Limits.
AMS2430 does not require computer monitoring and thus the limits are not included in that specification.
High or low media flow rates in air blast machines will affect the media velocity and hence the intensity of peening. Low media flow rates will have higher velocities than high media flow rates. Thus it is common to use a very lean (low) media flow rate to achieve a higher intensity (but at the penalty of longer time to achieve coverage).
