We supply several types of road gully. These are used to collect surface water from roads and driveways and are used with a hinged grating.
A trapped road gully is used where there is the possibility of odours coming up through the gully such as a combined storm and foul line or in a case where there maybe a high amount of oil likely to flow into the gully. The oil will float on top of the water and prevent it from entering the pipeline.
An untrapped road gully has a straight outlet and is used where there is no risk of odours occurring or from oil entering the pipeline. Untrapped road gullies come as single hole or double hole.