Your "pressurized accumulator" sounds like a "permeate pump", which are readily available, not too expensive (~50 USD), and easily installed. It took me longer to move the filter assembly out from under my sink than to splice the device into my RO system!
Anyone with an RO system living in a water-scarce region should install one! It'll save you many gallons a day, and has no downsides, unlike most other water reduction devices (like weak-flushing toilets or barely-misting shower heads).
Anyone with an RO system living in a water-scarce region should install one! It'll save you many gallons a day, and has no downsides, unlike most other water reduction devices (like weak-flushing toilets or barely-misting shower heads).