WDS, Water Drainage tube Systems: can be used in petrol and diesel engines where the intake of fresh air passes through the air filter into the engine. Thw WDS combines a variety of NORMA products such as V2 quick connectors and extruded tubes for water drainage.

Advantages:
1. High burst pressure.
2. Good media resistance.
3. High flexibilty.
4. High mechanical strength.
5. Decrease part weight by more than 50%.