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Blow-down, Expansion and Cooling Module BEM
Blow-down, Expansion and Cooling Module BEM


Blow-down, Expansion and Cooling Module BEM

The module is the ideal solution for disposing of the hot waste water from steam boiler systems.

  • For cooling blow-down water to the permissible temperature
  • Fast and easy assembly, requires just a small number of connections before it can be used
  • Rigorous compliance with official requirements thanks to automatic operation



The purpose of the BEM blow-down, expansion and cooling module is to recover all of the hot waste water in a steam boiler system. This blow-down is collected, expanded and cooled down to the pre-set permissible discharge temperature in the module. The module is designed for multi-boiler systems consisting of up to a maximum of 3 steam boilers.


A closed, upright container mounted on a support structure, with various feed and drain connections. The lower half of the module is filled with water during operation, while the upper half serves as expansion space. The media temperature is recorded and converted to an electrical signal by the temperature measuring transducer in the lower part of the module. Combined cooling is achieved by feeding in cold, softened make-up water. The waste water is safely drained off once the permitted discharge temperature has been reached. The discharge temperature can be controlled via the water service module control.

Equipment level

The module comprises a vertical cylinder sealed off with blank plates at both ends and fitted with continuous touch guards around the periphery. It comes fully assembled with all necessary fittings and thermal insulation ex works.

Technical Details and Documents

Boiler house components brochure