Jose,
The air vent would typically be installed at the highest point because it is counting on air to migrate into the vent, raise the float and is then removed. The air separator on the other hand is installed at the suction side of the pump because the coalescing mesh will separate the air bubbles from the water as it is drawn through the separator allow them to rise to the top of the and be removed. Without the mesh or something to separate the micro-bubbles the air vent would not be as effective.
Jose,
The air vent would typically be installed at the highest point because it is counting on air to migrate into the vent, raise the float and is then removed. The air separator on the other hand is installed at the suction side of the pump because the coalescing mesh will separate the air bubbles from the water as it is drawn through the separator allow them to rise to the top of the and be removed. Without the mesh or something to separate the micro-bubbles the air vent would not be as effective.
Dan Firkus
Caleffi North America