Phoenix (9-917BN) Air Fusion Hand Held Kit Airfusion by Phoenix Products - Introducing The Best Way To Turn That Low Pressure Hookup Into An Invigorating Shower The Airfusion design uses a vacuum valve built into the bottom of the shower head The valve creates compressed air bubbles that quickly expand as they're forced through the spray head with the water creating a high pressure spray that feels like home The new Airfusion shower heads from Phoenix Products use 20%-30% less water than conventional shower heads; Air Fusion Hand Held Kit: Brushed Nickel