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Worldwide shipping

FREE SHIPPING WITHIN GERMANY FOR ORDERS OVER €50.

Once your order has been placed, you will receive a confirmation email informing you that our shipping team has received your order. Once your order has been processed, you will receive an email notification with your tracking information. Shipping costs will not be refunded in the event of a return. We ship with:

Delivery by forwarding agent Parcel shipping Pallet delivery Delivery by WISY AG

Cellar tank for indoor installation
also for garage, shed or barn

The basement tank for rainwater is a plastic cistern that can be installed above ground for use in frost-free indoor areas, typically in the basement. It is suitable for storing service water from rainwater harvesting and is available in various volume sizes and two colour variants (black or light grey).

Made of robust, opaque polyethylene (LLD-PE), the tank is corrosion-free, dimensionally stable and designed for permanent use inside buildings. The design allows space-saving installation on a level surface - for example in utility rooms, plant rooms or basements.

The tanks do not have any prefabricated connection openings at the factory. The positioning of the connections can therefore be customised on site to suit specific requirements. Suitable connection techniques include bulkhead fittings, rubber lip seals or welded-in nozzles. Optionally available accessories enable the modular combination of several containers to form a complete system (battery position).

All tapping points must be labelled as "no drinking water" in accordance with DIN 1988 Part 2. The installation room must be level, stable, frost-free and well ventilated. There should also be a floor drain so that maintenance work can be carried out safely.

The cellar tanks are available in various sizes from 140 to 4,000 litres. A detailed technical overview can be found in the respective subsections of the product page.

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Regenwasserfilter

Tip
Filter collector FS Downpipe filter, WISY filter principle
Filter collector FS
Regular price: €199.92
Tip
Vortex Fine Filter WFF 100 Regenwasserfilter für die Zisterne Wirbel-Feinfilter WFF 100 mit Filtereinsatz aus Edelstahl WISY AG WF 2002
Vortex Fine Filter WFF 100
Regular price: €374.85
Rain collector RS downpipe filter grey, WISY Downpipe filter, WISY filter principle
Rain collector RS
Regular price: €99.90
Tip
Regenwasserfilter für die Zisterne Wirbel-Feinfilter WFF 150 mit Filtereinsatz aus Edelstahl WISY AG WF 1002 WFF 150 Sectional view, WISY
Vortex fine filter WFF 150
Regular price: €546.21