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  • Overflow Siphon for a Rainwater Tank. 3P Technik Overflow Siphon Uno.
  • Overflow Siphon (Uno) in an Above Ground Rainwater Harvesting System.
  • Overflow Siphon (Uno) in an Above Ground Rainwater Harvesting System - Components Labelled.

Overflow Siphon for Plastic Water Tanks


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Product Description

Rainwater Tank Overflow

When you harvest rainwater, it is important to filter the water before it reaches the water storage tank. However, very small particles such as pollen and oil will often go through your filter mesh and into your storage tank. This causes your water to sour and the particles in the tank to build up over time.

The Overflow Siphon Uno skims off any floating materials like oil in your water tank via the chamber slots in the product as the tank overflows.

Ideal for installation through plastic walled water storage tank like Enduramaxx Tanks. Contact us for information about a similar product for concrete tanks.

Particles heavier than water (such as pollen) will fall to the bottom of the storage tank and form a layer of sediment (the 3P Technik Calmed Inlet will ensure they are not disturbed).

The Overflow Siphon is the 3rd step of the Four Steps of Rainwater Harvesting (the Calmed Inlet is the 2nd).

Technical Information

  • Material: Polyethylene - Blue
  • Connector: DN100 (110mm Outer Diameter) back-nut with O-Ring
  • Weight: 1.1Kg
  • Overall Dimensions: L:540mm, D:160mm, H:270mm,

Included Components

  • Overflow Siphon Uno
  • Back-nut
  • O-Ring

Other Options

This Oveflow Siphon can be purchased as part of a Rainwater Harvesting System for Water Storage Tanks.

Useful Information

How to filter Rainwater from a roof - blog post.

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