Used to allow air to escape from transfer lines pumping high volumes. This reduces the effect of "air-hammer" and protects the pipeline from damage.
7.6cm Air-vacuum Relief Valve for Flush Line.
To prevent damages to transfer lines, 7.6cm air-vacuum relief valve must be installed at each line high spot. The relief valve allows air pockets to escape instead of getting trapped and cmopressed in the pipe which may cuase air hammer and pipe dislocaiton.
Air vacuum relief valve with riser installed on a flush line
Air removal phase.
Liquid forces ball upwards to ensure only air is expelled.