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Siphonic Roof Drainage

The concept of roof rainwater management has evolved into a highly engineered solution through the siphonic principle, where rainwater is drained under negative pressure—making the process significantly faster, more reliable, and highly efficient. The Smartflow Siphonic Roof Drainage System uses specially engineered outlets that prevent air entry, allowing pipes to run full and discharge water at exceptionally high velocities. As water accelerates through the vertical downpipe, it creates a strong downward pull that generates negative pressure in the horizontal piping. This vacuum-driven effect enables the system to rapidly siphon water from the roof, efficiently clearing even large volumes of rainfall—making drainage up to ten times faster and ensuring superior performance during extreme weather conditions.

System Benefits

Positive performance with Negative pressure

Customized Engineered
Design Solution

The customized design solutions are offered based on the specific project requirements. It also gives Complete control over downpipe discharge location as compared to traditional drainage system giving higher flexibility in design and planning to architects and consultants.

Higher Building
Space Utilization

Smaller diameter header pipe installed horizontally without Slope frees up the valuable building space resulting into ease in co-ordination with other services & maximizes the use of the building space.

Self-Cleaning High
Velocity Drainage

In a siphonic system, the absence of air within the pipes creates negative pressure, increasing water velocity and enabling rapid, efficient drainage from the roof. This high-velocity flow also provides a self-cleaning effect, keeping the piping network clear and significantly reducing maintenance requirements.

Simple Piping
Network

Fewer outlets, smaller pipe sizes, and a reduced piping network with fewer downpipes result in simpler and faster installation, saving valuable time and supporting timely project completion.

Why SmartFlow System??

Cost Effective

The Benefit-to-Cost ratio is much higher than the traditional drainage system due to material saving and reduction in installation times and labor, proving the system as true cost-effective solution for roof drainage.

Resources Saving

Reduced structural load, lightweight piping, and fewer downpipes minimize groundworks, freeing up valuable space for utilization. Overall, the system reduces material requirements, resulting in efficient and economical resource usage.


Robust System

HDPE piping, combined with specially designed fittings and a robust bracketing system, ensures a leak-proof installation. This system delivers high structural integrity and remains unaffected by vibrations and thermal variations, ensuring reliable, long-term performance.

Assured Performance

Each system is custom-designed to meet specific project requirements and installed in strict accordance with precise engineering guidelines, ensuring consistently high performance and long-term reliability.


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Smartflow Aquatech Solutions is siphonic roof drainage and rainwater management specialists of India. We provide a one-stop solution for the design, manufacture, installation, project management and maintenance of siphonic rainwater drainage systems.

Regd. Office
G 1106, Signature park, BRTS Road, Near Dange Chowk, Thergaon, Pune 411033, India
+91 9764212341       enquiry@smartflowindia.com

Overseas Office
11 Jalan USJ 21/1, Subang Jaya Selangor 47630,
Malaysia.       +60 19-380 1836
enquiry.overseas@smartflowindia.com
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