Bag condition indicator Outlet shell Coalescer bag Bypass valve Inlet shell Drain orifice Collector Coalescer support Normal airflow Bypass airflow Figure 16-68.  A water separator coalesces and removes water by swirling the air/water mixture from ACM expansion turbine. Centrifugal  force sends the water to the walls of the collector where it drains from the unit. air with conditioned air in response to individual temperature  selectors for each zone. When cooling air demands are low, a  turbine bypass valve routes some heat exchanger air directly  to the conditioned air manifold.  [Figure 16-69]  Condensed water from the water separator is sprayed into the  ram air at its entrance to the exchanger to draw additional  heat from the compressed bleed air as the water evaporates.  A trim air valve for each cabin zone mixes bypassed bleed  16-41