Underground PEHD rainwater tank TWINBLOC 3500 l 1135005425

Rainwater harvesting with efficiency and durability

This TWINBLOC underground rainwater tank with a capacity of 3500 liters is the ideal solution for households and installers looking for a reliable water collection system. Made of high-quality high-density polyethylene (HDPE), this tank provides long-lasting protection against corrosion and mechanical damage. The design based on two cylinders guarantees exceptional stability, allowing even passenger cars to drive over it. This is an ideal solution where space is limited and access to rainwater is crucial.

Design and functionality for professionals and users

The TWINBLOC tank is designed for easy installation and configuration. The ability to connect multiple tanks in batteries allows you to adjust the capacity to individual needs – however, remember that you can only connect tanks of the same capacity. The set includes all the necessary elements for the proper functioning of the system: a telescopic inspection shaft with a durable cover (up to 200 kg), DN100 connection fittings, an overflow siphon, and protection against small animals. The overflow siphon protects against overfilling the tank, and the protection prevents unwanted guests from entering.

An additional advantage is the possibility of placing the tank in places with a high groundwater level – this solution will work even in difficult terrain conditions. The simple construction and adjustable height of the inspection shaft facilitate installation, and the availability of a basket filter (optional) allows for additional purification of the collected water.

Benefits of use – economy and ecology in your home

Using rainwater is not only saving money but also caring for the environment. Annual rainfall in Poland allows you to collect a significant amount of water from the roof – with a roof area of 200 m², you can collect up to 120 m³ per year! Rainwater is ideal for watering the garden, flushing toilets, washing clothes or washing the car, reducing water consumption from the water supply. The TWINBLOC tank is an investment that quickly pays for itself while contributing to a more sustainable lifestyle. Roth offers a 20-year warranty on the tank and treatment plants, which confirms its high quality and reliability.