During in-house testing we achieved a draining capacity of 32 litres per second (500 U.S. GPM) through a single 75mm drain. In practice we limit our design to 20 litres per second (317 GPM) to keep pipe sizes smaller.
The 125mm (5") HydroMax drain will drain up to 100 litres per second (1600 GPM)
Engineered for Better Performance
EveryHydroMax™ Roof Drainis provided with an optimized inducer which has been laboratory tested to provide high flow rates through a smooth performance curve whilst achieving low water depths on the roof.
Versatile and Compatible with any Roof
We provide a comprehensive range of outlets for any roof type.
Compact
Our standard outlet is the most compact high-capacity outlet available in the market today making our outlet suitable for gutters which have a smaller sole girth than what would be required for our competition.
Ingenious Design
All of our competitors outlets comprise of a number of components above the roof outlets. These components can, and frequently do get lost rendering the outlet inoperable. Our outlet has one single component which is securely fixed with dome-headed “Allen” bolts for additional security.
HydroMax Siphonic Overflow Drains, Leafguards, Gravel Guards are available.
