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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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.

WISY Rain Reservoir Made in Germany
WISY rainwater storage tank Storage volume

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.

0.1

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
0.2

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
0.3

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
Equipment comparison of the cisterns
WISY rainwater storage tank
Made in Germany

Security

A safe surface even in adverse weather conditions.

Reinigung

Warranty

We give you a 20-year guarantee on the durability of the polyethylene!

WISY Rain Reservoir Drawing

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.