Best Siphon Zisterne 2026

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Last Updated - 27.03.2026

Best Choice

01

3P Technik Filtersysteme

3P Überlaufsiphon DN 150 with Rodent Block for Cisterns and Rain Water Tanks

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9.8

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Working principle: dirt particles lighter than water rise slowly and float on the water surface. This layer is removed when the cistern overflows by the specially shaped overflow siphon with skimmer effect
The regular overflow of the cistern is important for a consistently good water quality to prevent the water from "tipping". The swimming layer could close the water surface so that anaerobic degradation would take place
Technical data: the overflow siphon with rodent barrier is equipped with a DN 150 connection. It is 659 mm long, 375 mm wide and is 765 mm high. The weight is 7.5 kg
Description: The DN 150 overflow siphon removes floating substances on the water surface thanks to the so-called skimmer effect and is mounted in the cistern
2. Eyelets for hanging

299,90 €
02

3P Technik Filtersysteme

Die 3P Backflow Valve DN100 is installed in the cistern in the Rain Water Tank, With Überlaufsiphon Duo A Backflow Prevention. Storage From The Channel to the Rain

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9.7

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

The 3P duo backflow flap is installed in the extension to the cistern filter and prevents backflow from the channel. It leads through the so-called Skimmer effect removes dirt particles from the water surface and serves as an odour trap to the channel
Technical data: the 3P backflow flap has a length of 850 mm, width 480 mm and a height of 360 mm. The connection is DN 100
Material: Polyethylene
General information on backflow:
Connection: DN 100

199,90 €
03

3P Technik Filtersysteme

3P Overflow Siphon DN 100 without Height Offset for Passage Filter in Cisterns or for Rainwater Tanks with Connected Insurance

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9.4

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

The special shape of the overflow disposes of the upper swimming layer/pollen, ready-to-plug component
The overflow siphon serves as an odour trap to the sewer and removes particles floating on the surface when the cistern overflows through the so-called skimmer effect
Technical data: the connection of the overflow siphon without rodent barrier is DN 100, it is made of polyethylene
Ready-to-fit component

64,90 €
04

3P Technik Filtersysteme

3P Overflow Siphon Mono DN 100 with Skimmer for Cisterns and Rainwater Tanks

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9.1

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Working principle: dirt particles lighter than water rise slowly and float on the water surface. This floating layer is removed when the cistern overflows by the specially shaped overflow siphon with skimmer effect
The Mono overflow siphon serves as an odour trap to the channel and removes the particles floating on the surface when the cistern overflows thanks to the so-called skimmer effect
Technical data: the connection of the Mono overflow siphon is DN 100, it is made of polyethylene and has a weight of 2.0 kg
Technical data:
Connection: DN 100

79,90 €
Value for Money

05

3P Technik Filtersysteme

3P Überlaufsiphon DN 100 with Rodent Barrier Plastic

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9.0

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

The special shape of the overflow disposes of the upper swimming layer/pollen, ready-to-plug component
The 3P overflow siphon with rodent barrier made of plastic serves to protect against small animals entering the cistern, as an odour trap to the channel and the removal of the swimming layer from the cistern
Ready-to-fit component
Casing: made of high-quality polyethylene

69,90 €
06

3P Technik Filtersysteme

3P Überlaufsiphon Duo Bore DN 100 for Cisterns and Rain Water Tanks

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8.7

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

The Überlaufsiphon Duo removes thanks to the skimmer effect schwimmende substances on the water surface and is between rain water filter and outlet in the butt.
Technical Data: on the Überlaufsiphon Duo's connector is DN 100, it is manufactured from and has a weight of 2.2 kg
Technical Data:
Operating principle: dirt particles, going up the lighter than are slowly on and swimming on the water surface this swimming layer is removed when the butt via the built-in specially designed Überlaufsiphon Skimmer effect
Connection: DN 100

99,90 €
07

3P Technik Filtersysteme

3P Überlaufsiphon Uno For Concrete Cisterns

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8.5

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Weight: 1.1 kg
The Überlaufsiphon UNO for concrete cisterns serves as a trap when removed for channel and the butt to the surface floating dirt particles with the skimmer effect
Technical information: The 3P Überlaufsiphon UNO for concrete cisterns has the following dimensions 540 x 190 x 270 mm, it is made from polyethylene and has a weight of 1.1 kg

69,90 €
08

3P Technik Filtersysteme

3P Überlaufsiphon DN 100 Rodent Block for Cisterns and Rain Water Tanks

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8.4

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

The Überlaufsiphon serves as trap when removed for waste water channel and the butt to the surface area floating particles with the skimmer effect
The special shape of the overflow thrown away the upper Schwimm layer/Pollen, plug-in component
Technical Data: on the Überlaufsiphon Unlocked rodent's connector is DN 100 it is manufactured from
Plug in component

64,90 €
09

3P Technik Filtersysteme

3P Überlaufsiphon DN 100 with Rodent Barrier Coil (Stainless Steel) for Cisterns and Rain Water Tanks

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8.2

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

The special shape of the overflow disposes of the upper swimming layer/pollen, ready-to-plug component
The overflow siphon serves as an odour trap to the sewer and removes particles floating on the surface when the cistern overflows through the so-called skimmer effect
Technical data: the connection of the overflow siphon with rodent barrier is DN 100, it is made of polyethylene
Rodent lock spiral: stainless steel
Ready-to-fit component

79,90 €
10

3P Technik Filtersysteme

3P Overflow Siphon UNO DN 100 with Skimmer Especially for Plastic Cisterns and Rainwater Tanks

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8.0

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Weight: 1.1 kg
The 3P overflow siphon UNO, specially designed for easy and reliable installation in plastic cisterns, reliably dissipates floating dirt particles in the rainwater into the sewer system
Technical data: The 3P overflow siphon UNO for plastic cisterns has the following dimensions 540 x 160 x 270 mm, it is made of polyethylene and has a weight of 1.1 kg. The union nut is DN 110 with O-ring
Material: Polyethylene

89,90 €