The Adca blowdown and cooling units are used in the modern boiler houses to cool hot waste water and steam boiler blowdown before to discharge into a pit or drain. The waste water is discharged into the unit which is at atmospheric pressure and the cooling water enters via a control valve controlled by a thermostat, mixing with the hot water .
  If flash steam can not be recovered or discharged to atmosphere an additional condensing water spray system (optional) can be supplied . This one is fitted in the top of the unit and can be controlled directly either by another thermostat or the same command used for the automatic blowdown valve control.