WISY rainwater storage tank
€1,664.81*
- All components pre-assembled ready for connection
- Tight, seamlessly manufactured tank
- Easy-to-maintain large dome shaft for convenient access
- Anti-slip plastic lid that can be driven over by car
- 20-year guarantee on the durability of the storage material.
Available, delivery time: 3-4 weeks
The WISY rainwater storage tank is optimally shaped for the dissipation of pressure loads. Manufactured seamlessly in one piece, it remains leak-proof over the long term.
The anti-slip lid and the pressure water equalisation valve in the base provide additional safety. When gravel is poured into the excavation, the rainwater storage tank is automatically underfilled in a load-bearing manner.
Basic equipment
The basic equipment includes the following components:- Rainwater storage tank with 5,500 litre storage volume
- Anti-slip plastic lid, loadable up to 600 kg
- Three DN 100 connection holes with seals and blind plugs
- Pressure water equalisation valve in the cistern base
- Two stable lifting eyes
Functional equipment LineAr
In addition to the basic equipment, the functional equipment LineAr also includes:- Rainwater filter LineAr 100 K
- Inlet calming made of stainless steel
- All pipes from water inlet to overflow / sewer connection
- Ready-to-plug-in system, completely piped, all components pre-assembled
Functional equipment WFF
In addition to the basic equipment, the functional equipment WFF also includes:- WFF 100 vortex fine filter, special version with freely rotatable rainwater inlet and filter insert of the WFF 150
- Multisiphon with small animal protection and backflow protection
- Inlet calming made of stainless steel
- All pipes from water inlet to overflow / sewer connection
- Ready-to-plug-in system, completely piped, all components pre-assembled
WISY makes it fit!
WISY rainwater storage tanks have a predefined construction height, which can, however, be changed by shortening the manhole or by attaching an extension pipe and thus adapted to the ground surface. The construction height can be shortened or extended by a maximum of 30 cm.Special note: When installing the rainwater storage tank in the ground, always ensure that there is no groundwater (e.g. also in the case of strata water on slopes).
All dimensions (in mm) are subject to manufacturing variations. Pipe and lead-through dimensions always refer to the bottom of the pipe.
The installation and operating instructions for this product are only provided in German and English. By purchasing this product, you agree to this.
NOTE: The extension of the dome shaft for the rainwater storage tank is only recommended up to a maximum of 30 cm.
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Once your order is placed, you will receive a confirmation email letting you know that our fulfillment team has received your order. Once your order is fulfilled, you will receive an email notification with your tracking information. Shipping fees are non-refundable in the case of returns. We ship with:
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Technical data
Dimensions | 4,5 m³ | 5,5 m³ |
---|---|---|
Diameter A | 2.350 mm | 2,350 mm |
Tank height B | 2.510 mm | 2.770 mm |
Technical connection C | 1.690 mm | 1,950 mm |
Duct connection D | 1,285 mm | 1.545 mm |
Rainwater inlet E | 1,895 mm | 2.155 mm |
Weights | ||
Basic equipment | 220 kg | 250 kg |
Functional equipment | 250 kg | 280 kg |
Stable and tight - guaranteed!
The WISY rainwater storage tank is optimally shaped for the dissipation of vertical pressure loads. The rainwater storage tank is seamlessly manufactured in one piece and remains leak-proof in the long term. We give you a 20-year guaranteeon the durability of the environmentally friendly and durable polyethylene !
This stability makes the WISY cistern passable for cars. It can therefore be installed not only in the garden, but also under the garage driveway.
Even in adverse weather conditions, the anti-slip lid provides a safe surface. To ensure that no one can unintentionally endanger themselves, the lid of the rainwater storage tank can only be opened by using tools.


Easy handling on the construction site
Two stable lifting lugs facilitate handling on the construction site, for example with a small mini-excavator. The rainwater storage tank is underfilled in a load-bearing manner by filling gravel into the excavation pit. Pipe penetrations with inserted seals simplify installation.
The pressure water equalisation valve in the bottom of the cistern provides safety in case groundwater should collect outside. The wide dome shaft ensures easy access for inspection work.
Basic equipment
- Anti-slip plastic cover, loadable up to 600kg
- Three DN 100 connection holes with seals and blind plugs
- Pressure water equalisation valve in the cistern base
- Two stable lifting eyes
Functional equipment LineAr
In addition to the basic equipment, the functional equipment LineAr also contains:
- Rainwater filter LineAr 100 K
- Inlet calming made of stainless steel
- All pipes from water inlet to overflow / sewer connection
- Ready-to-plug-in system, completely piped, all components pre-assembled
Functional equipment WWF LineAr
In addition to the basic equipment, the functional equipment WFF also includes:
- WFF 100 vortex fine filter, special version with freely rotatable rainwater inlet and filter insert of the WFF 150
- Multisiphon with small-animal protection and backwater protection
- Inlet calming made of stainless steel
- All pipes from water inlet to overflow / sewer connection
- Ready-to-plug-in system, completely piped, all components pre-assembled


Security
A safe surface even in adverse weather conditions.
Warranty
We give you a 20-year guarantee on the durability of the polyethylene!

WISY makes it fit!
WISY rainwater storage tanks have a predefined construction height, which can, however, be changed by shortening the manhole or by attaching an extension pipe and thus adapted to the ground surface. The construction height can be shortened or extended by a maximum of 30 cm.
Special note: When installing the rainwater storage tank in the ground, always ensure that there is no groundwater (e.g. also in case of strata water on slopes).
All dimensions (in mm) are subject to manufacturing variations. Pipe and lead-through dimensions refer to the bottom of the pipe.
The installation and operating instructions for this product are provided in German and English only. By purchasing this product, you agree to this.