New Roof Drainage System Offers Greater Flow Capacity

摘要

Polypipe Terrain has launched its HydroMax siphonic roof drainage system.rnPolypipe says that the Hydromax offers a flow capacity up to 10 times greater than that of an equivalent gravity-fed system.rnPolypipe claims that, on roof areas of 1,500sq metres andrnabove, the system can remove up to 25 litres/sec if using a 75mm roof drain, and up to 100 litres/sec with a 125mm drain.rnHydroMax uses siphonic principles to suck the rainwater from the roof into small diameter pipes.