D-Raintank® Freeway is a lateral 250mm diameter pipe pre-installed into D-Raintank®
- Freeway is jointed (ogee) at each D-Raintank® module abutment to provide a continuous conduit right through the stormwater storage installation.
- Impervious invert allows sub-storm rainfall, summer trickle and attendant silts to pass directly through the storage facility.
- Perforated soffit releases stormwater into D-Raintank®
- Manufactured from compact UPVC with a wall thickness of 8.2mm, Freeway can be jetted.
- Enables the whole installation to be flushed out both for routine maintenance and in the event of upstream silt traps overflowing.
This has been fully tested and complies with standard
D-Raintank® loadings.
*NB An additional outlet pipe will be required at D-Raintank® installation invert level to evacuate the bottom 200mm of the installation including the flush.
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