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1,000-Liter Underground Tank - Compact Rainwater Cistern, Ready for Installation

1,000-Liter Underground Tank for Space-Saving Rainwater Harvesting

This low, cylindrical underground tank made of polyethylene (PE) stores 1,000 liters of rainwater, for example, for watering gardens and green spaces. Its low profile and light weight make it ideal for installation on small lots or in community gardens. Three pre-installed DN 100 rubber lip seals are provided for the inlet, overflow, and supply line or empty conduit. A tank-mounted filter with an inlet flow stabilizer or a separate inlet flow stabilizer can be selected as an accessory.

Product Features and Benefits

  • Low profile – facilitates installation in confined spaces
  • Lightweight – facilitates transport and handling compared to metal or concrete tanks
  • Seamlessly manufactured—using a rotational sintering process with a stress-free structure and 100% leak-tightness
  • Integrated dome – with a snap-on lid and can be shortened on site if necessary
  • Three pre-assembled connections—rubber lip seals for DN 100 pipes (inlet, overflow, and supply line or empty conduit connection)
  • Additional connection points – further connections can be custom-made on-site
  • Beaded profile – supports the tank’s structural stability
  • Inspection opening—500 mm diameter for inspection and maintenance work
  • Made in Germany – manufactured in Germany
  • 25-year warranty – provided the tank is installed properly in accordance with the installation instructions; warranty certificates (DE) and (EN) are available for download

Optional features

  • Without accessories – for customizing or expanding your system
  • Inlet Settler – guides rainwater calmly into the storage tank, helps fine dirt particles settle, prevents the sediment layer from being stirred up, and supplies oxygen to the water in the tank
  • Tank-mounted filter with inlet settling chamber – filters rainwater inside the tank between the inlet and overflow via a 0.8-mm slotted screen. The filter is suitable for surface drainage areas up to 160 m². A self-cleaning effect reduces maintenance requirements compared to basket filters; a hook for removing the filter is included

Technical Specifications

Feature Value
Material Polyethylene (PE-LLD)
Volume 1,000 liters
Weight 50–55 kg, depending on the configuration
Length 2,020 mm
Width 900 mm
Height 1,350 mm
Connections 3 x DN 100 (Ø 110 mm) with rubber lip seals

Installation & Use

Please follow the installation instructions and read all instructions carefully before installation, connection, and commissioning. The safety and installation regulations must be fully complied with to ensure proper installation and safe use. Warranty or guarantee claims may be void if the tank was not installed properly in accordance with the installation instructions and the defect is attributable to this improper installation. Check the system regularly for leaks, cleanliness, and stability.

The scope of delivery depends on the selected configuration and is listed in the “Scope of Delivery” tab.

Delivery to mainland Germany is free of charge via a freight carrier, delivered curbside. For information on the exact delivery process, see “Delivery Process.”

Material & Sustainability

The tank is made of durable polyethylene (PE) containing a proportion of recycled material. The material is chemically inert and has no effect on the quality of the stored rainwater. The tank is fully recyclable. As a result, the product supports the circular economy. GreenLife manufactures the underground tank in Germany. Learn more about sustainability at GreenLife.

Technical Specifications

Feature Value
Material Polyethylene (PE-LLD)
Volume 1,000 liters
Weight 50–55 kg, depending on the configuration
Length 2,020 mm
Width 900 mm
Height 1,350 mm
Connections 3 x DN 100 (Ø 110 mm) with rubber lip seals
Inspection opening 500 mm
Tank cover Snap-on lid, load-bearing capacity up to 100 kg

Dimension Drawing
Download
Data Sheet Download
Bid SpecificationsDownload
Installation InstructionsDownload

Do You Have Any Questions? We’re Here to Help.

Our customer service team is happy to assist you with any questions regarding product selection, application, installation, or accessories.

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