1. Pipeline Filling: During the filling process of a pipeline, high air flow is forced out through the kinetic orifice of the air valve. Once water enters the valve's chamber, the float buoyed upwards causes the kinetic orifice to close. The unique aerodynamic structure of the valve body and float ensures that the float cannot be closed before water reaches the valve.

3 4 vacuum relief valvereplacement

2. Pipeline Draining: When a pipeline is drained, a negative differential pressure is created causing atmospheric air to push the float down.

AVG PTRvalve

1. Main Irrigation Networks - Air relief and vacuum prevention downstream of pumps, along supply lines and at elevations in main irrigation networks.

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