The HydroMax™ Siphonic Roof Drainage System was developed by Ross ADT™ to advance the siphonic principles to create a powerful means of literally sucking the rainwater from a roof. Using small diameter pipework running at full-bore flow, HydroMax provides 10 times more flow capacity than an equivalently sized gravity system. HydroMax works with the company's sophisticated HydroTechnic™ analytical design software program to optimize an Engineered Drainage Solution. HydroMax™ Inc.