Automatic ERHARD Disc type air inlet valve are used for larger pipelines in dams, for transporting or turbines. They are protecting the pipeline against dangerous vacuum. This phenomena can be caused by a quick turn-off of pumps, fast draining or fracture of the pipeline.
Automatic air admission for larger pipelines
Large cross section for maximum air inlet
Coated with EKB
Design and dimensioning depending on working conditions
Additional TWIN-AIR air valve for air evacuation under working pressure
On request with additional resilient gate valve as inspection valve for the TWIN-AIR