Roth Twinbloc base container without filter basket with DN 600 shaft and cover
The Roth Twinbloc underground tank without filter basket is a robust and space-saving solution for rainwater storage in underground installations. The tanks are made of high-quality high-density polyethylene (PE-HD) and are manufactured seamlessly – for absolute tightness and a long service life.
Each container is equipped as standard with an integrated DN 600 dome shaft system and an accessible plastic cover. A version suitable for vehicle traffic is available as an option from the Roth accessories range. The inlet, overflow with small animal barrier, and empty pipe connection are all DN 100 standard.
The existing drilling surfaces allow several containers to be easily connected with KG pipe DN 100 – ideal for expanding to larger storage volumes of up to 50,000 liters.
Technical data
| Model | Volume | Dimensions L x W x H (mm) | Weight (kg) |
|---|---|---|---|
| 1,500 liters | 1,500 L | 2350 x 1395 x 695 | 80 |
| 3,500 liters | 3500 L | 2350 x 2300 x 975 | 140 |
| 5,000 liters | 5000 L | 2460 x 2350 x 1350 | 190 |
| 7,000 liters | 2x 3500 L | 2x 2350 x 2300 x 975 | 2x 140 |
| 10,000 liters | 2x 5000 L | 2x 2460 x 2350 x 1350 | 2x 190 |
Equipment and connections
Inlet connection: DN 100
Overflow trap with small animal barrier: DN 100
Connection for empty conduit: DN 100
Shaft: Integrated DN 600 dome shaft
Cover: walkable plastic cover (car-accessible version optional)
Connecting multiple containers: using KG pipe DN 100 on prepared drilling surfaces
Advantages
Space-saving flat design for shallow installation depth
Ideal for rainwater cisterns in private or commercial areas
100 % dnot through seamless PE-HD production
Expandable to a total volume of up to 50,000 liters
Earth-stable and UV-resistant
Compatible with extensive accessories from the Roth rainwater program