The WISY storage tank is optimally shaped to withstand vertical compressive loads. The rainwater storage tank is a seamless one-piece unit for long-term leak-tightness. We offer a 20-year guarantee on the durability of the environmentally friendly polyethylene tank material.
Thanks to their exceptional strength, WISY storage tanks are capable of withstanding the weight of passing road vehicles. This means that they can be installed under the driveway as well as in the garden. Even when weather conditions are wet, the non-slip cover is safe to walk over.
Thanks to their light weight and two rugged lifting eyes, WISY storage tanks are particularly easy to handle on site (using a mini-digger, for example). When the excavated pit is filled up with gravel the storage tank is fully supported from below. Tube bushings with fitted seals make installation even easier. For additional safety, a compressed water equalizing valve is fitted in the tank base for protection in the event of groundwater collection around the tank. The wide access shaft ensures ease of entry for maintenance work.
(additionally compared with basic equipment)
The tanks are delivered with all components and tubing assembled ready for installation.
(additionally compared with basic equipment)
The tanks are delivered with all components and tubing assembled ready for installation.
Sizes | 4,5 m³ | 5,5 m³ |
---|---|---|
Diameter A | 2.350 mm | 2.350 mm |
Tank height B | 2.510 mm | 2.770 mm |
Service duct connection C | 1.690 mm | 1.950 mm |
Drain connection D | 1.285 mm | 1.545 mm |
Rainwater inlet E | 1.895 mm | 2.155 mm |
Weights | ||
Basic equipment | 220 kg | 250 kg |
Complete equipment | 250 kg | 280 kg |