Underground PEHD rainwater tank TWINBLOC 5000L with basket filter 1135005424

Rainwater tanks – a solid solution for water storage

This underground tank with a capacity of 5000 liters is an ideal solution for households and businesses looking for an effective way to collect rainwater. Made of durable polyethylene (HDPE), it ensures long-lasting reliability and resistance to weather conditions. The design based on two cylinders guarantees stability, even under ground load, allowing for safe installation in areas exposed to passenger vehicle traffic.

Functionality and equipment

The tank is monolithic, meaning it is made seamlessly, eliminating the risk of leaks. The set includes a telescopic inspection shaft with a durable cover (up to 200 kg), allowing easy access to the inside of the tank for inspection and maintenance. Additionally, it is equipped with DN100 connection fittings, an overflow siphon to prevent overfilling, and protection against small animals. A key element is the basket filter located in the shaft, which pre-cleans the water from larger contaminants such as leaves or branches.

Application and benefits

The TWINBLOC tank is perfect for systems using rainwater for garden irrigation, toilet flushing or washing. The possibility of placing the tank in groundwater (up to half its height) expands the range of potential installation locations. Thanks to its simple construction and the ability to connect several tanks in batteries, the capacity can be easily adapted to individual needs. It is worth mentioning the 20-year manufacturer's warranty – ROTH – which proves the high quality of the product and guarantees long-term use. Installation is quick and easy, and the adjustable height of the shaft allows it to be adapted to the excavation depth.