AS-R/AS-Q can reduce air consumption by 25%, and combines multiple adjustments to simplify operations. The AS-R functions to reduce return stroke pressure. The AS-Q functions as a rapid supply and exhaust to avoid sudden piston extension and delay in pressure charge.
For product configuration and CAD model download:
https://www.smcusa.com/products/ASR-ASQ-Air-Saving-Speed-Controller~161599