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Air/Vacuum Valves (AVV) APCO


Technical Information

Air/Vacuum Valves are float operated and have a large discharge orifice equal in size to the valve’s inlet.


Air/Vacuum valves allow large volumes of air to be exhausted from or admitted into a pipeline as it is being filled or drained.


As the pipeline fills, fluid enters the valve, raises the float and shuts-off.


When draining the pipeline, the float drops and allows air to enter, preventing a vacuum and possible pipeline collapse or damaging water column separation.

Size range:
1/2 - 24" ( 15-600mm)


Body styles:
Series 140, 140H and 150


Body material:
Ductile iron, cast iron, carbon steel, 316 stainless steel
Automatic Air Valves