Best Siphon Zisterne 2026

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Last Updated - 22.07.2026

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

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

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9.5

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 overflow siphon Duo removes floating substances on the water surface thanks to the so-called skimmer effect and is mounted between rainwater filter and spout in the cistern
Technical data: the connection of the overflow siphon Duo is DN 100, it is made of polyethylene and has a weight of 2.2 kg
Technical data:
Connection: DN 100

99,90 €
03

3P Technik Filtersysteme

3P Überlaufsiphon DN 100 with Rodent Barrier Plastic

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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 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 €
04

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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9.1

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

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 €
Value for Money

05

3P Technik Filtersysteme

3P Overflow Siphon UNO DN 100 with Skimmer Especially for Concrete Cisterns and Rainwater Tanks Made of Concrete

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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

Weight: 1.1 kg
The UNO overflow siphon for concrete cisterns serves as an odour trap to the channel and removes dirt particles floating on the surface when the cistern overflows thanks to the so-called skimmer effect
Technical data: The 3P UNO overflow siphon for concrete cisterns has the following dimensions 540 x 190 x 270 mm, it is made of polyethylene and has a weight of 1.1 kg

69,90 €
06

3P Technik Filtersysteme

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

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 €
07

3P Technik Filtersysteme

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

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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

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 €
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

VARIOSAN

VARIOSAN Floating Removal Set 12494, 1 Inch, Float Ball, Suction Basket, Check Valve, Hose Nozzle

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8.3

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

Versatile - Suitable for cistern, fountain, water butt, IBC containers and similar containers. Ideal for garden irrigation with domestic water system or suction pump.
Ready to use - float ball (diameter 15 cm), brass foot valve with check valve, stainless steel coarse filter, rust-proof hose clamp and hose nozzle for 1 inch hoses (diameter 26 mm). Simply connect to the suction hose, put it in the water, done.
Protect the pump thanks to the check valve - The suction line remains filled, the pump does not have to suck again every time you start. This ensures instant water pressure when switched on.
Clean water instead of floor mud - The floating removal sucks the water directly under the water surface where it is the cleanest. No more clogged filters and dirty water from the tank bottom.
Brass and stainless steel - The foot valve is made of brass, the coarse filter is made of stainless steel, the hose clamp is rust-proof (W5). Made for permanent use in water.

22,95 €
10

3P Technik Filtersysteme

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

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8.1

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 €