Underground rainwater tank PEHD BASIC 7500L W-222

Rainwater tanks – an effective solution for home and garden

This underground rainwater tank with a capacity of 7500 liters is a practical solution for collecting rainwater. It is ideal for use in home gardens and in rainwater retention systems on larger properties. The tank made of high-density polyethylene (HDPE) is characterized by durability and resistance to weather conditions and loads.

Construction and application

The BASIC type tank is equipped with a number of elements that facilitate its use and integration with the rainwater drainage system. The set includes a basket filter, which pre-cleans the water from larger impurities. A siphon with a grate at the tank outlet prevents insects and other dirt from entering. A suction hose with a float, mesh filter and check valve allows for safe water intake. Additionally, the tank has a revision hatch with a diameter of 400 mm, which provides easy access to the interior for inspection and cleaning.

The tank is intended for collecting water from building roofs, and the collected water can be used for watering plants, washing outdoor surfaces or flushing toilets (after using appropriate filters). It is also possible to expand the system with pumps and controllers, which increases the functionality and efficiency of rainwater use.

Advantages for the installer and end user

• Durability and resistance: Made of high-quality HDPE, the tank is resistant to corrosion, impact and ground loads.
• Easy installation: The flat construction makes it easy to transport and install the tank, and access through the revision hatch allows for convenient maintenance work.
• Complete equipment: The set includes all the necessary elements for the proper functioning of the rainwater retention system – a basket filter, siphon, suction hose with filter and check valve, and a revision hatch.
• Versatility: The tank can be used both in garden irrigation systems and in gray water installations (after appropriate filtration).
• Safety: The check valve prevents backflow of water into the water supply system.
• Compliance with standards: The product has a National Declaration of Performance (NDP) and a National Technical Assessment (NTA), which confirms its quality and safety of use.
• Load capacity: With proper protection (B25 concrete and a relieving plate), passenger cars (up to 3.5 t) and trucks (up to 60 t) are allowed.

Construction features

The tank is characterized by a monolithic construction ensuring tightness and resistance to ground pressure. It has DN110 diameter ports with the possibility of using DN160, which facilitates connection to the rainwater drainage installation. The total height of the tank is 1565 mm, and its dimensions are 3600 mm in length and 2250 mm in width. The weight of the tank is 380 kg.