Multi Siphon Systems
The Multi-siphon overflow unit has been designed specifically for use in rainwater storage tanks. The unit is effectively a ‘U’ bend, providing a water seal. This acts as a barrier to unpleasant smells from the drain that connects to the overflow, which could otherwise taint the water. The unit also performs the important function within the tank of removing the floating debris from the surface of the water. This is achieved by the design of the units’ inlet, which is so shaped that when overflow conditions occur the water is ‘skimmed” rapidly into the horizontal opening.

What Is a Multi Siphon System?
A Multi Siphon setup typically includes a series of siphon tubes or channels that simultaneously transfer liquids from one chamber or tank to another—without requiring pumps. These systems rely on atmospheric pressure and gravity once a siphon is initiated
They are commonly used for:
- Large-scale rainwater harvesting systems
- Sewage equalization tanks
- Effluent flow balancing in treatment plants
- Drainage in retention ponds and reservoirs
Key Benefits of Multi Siphon Systems
- Ideal for overflow management in high-rainfall areas or variable influent loads
- Rapid and synchronized flow activation
- Low maintenance – No moving parts
- Reduces operational costs

Industries & Sectors We Serve
Agricultural irrigation tanks
Industrial drainage systems
Water storage reservoirs
Wastewater treatment plants