Prelocation tunnel 300

Percolation Tunnel 300

Space-saving and economical

The GRAF percolation tunnel has been especially designed for use in private and rural areas. The system, consisting of one or more tunnel modules and two end plates, can be freely sized. It is laid on one level. The lightweight is very easy to lay at only 11 kg. In order to facilitate free design of the surface above, the system can be permanently loaded with approx. 3.5 t per sqm and thus, it is suitable for vehicle loading.

Space-saving

The GRAF percolation tunnels can be stacked on top of each other with ease thanks to their special construction. Up to 42 percolation tunnels can be transported on one pallet, saving on logistic costs and expensive storage.

Suitable for vehicle loading

The system has a permanent load-bearing capacity of 3.5 tons per sqm, which facilitates free design of the surface above and thus, it is suitable for vehicle loading.

High storage volume

The GRAF percolation tunnel 300 can hold 3 times the volume of a conventional gravel ditch. 1 module (11 kg) replaces approx. 800 kg of gravel and 36 m of drainage pipe.

Cost-effective

You will save real money with the percolation tunnel by saving on ground excavation and thanks to the good price-performance ratio compared to a conventional gravel ditch!

Can be extended as required

The percolation tunnel is laid in one row and can be flexibly adjusted to the conditions and the desired storage capacity.

Easy to install

Installing the module is easy, fast and variable. It can be installed without heavy equipment - a percolation tunnel weighs just 11 kg. The individual tunnel modules are simply put together in one row and are equipped with two end plates per row.

Three-dimensional flow behavior

The special construction of the GRAF percolation tunnel guarantees lasting, high percolation performance.