GESTRA Blowdown Valves

Set Descending Direction

17 items

per page
  1. Gestra Blowdown Valve, MPA110
    Article Number: MPA110
  2. Gestra Blowdown Valve, MPA46
    Article Number: MPA46
  3. Gestra Blowdown Valve, MPA47
    Article Number: MPA47
  4. Gestra Blowdown Valve, PA110
    Article Number: PA110
  5. Gestra Blowdown Valve, PA46
    Article Number: PA46
  6. Gestra Blowdown Valve, PA47
    Article Number: PA47
  7. Gestra Continuous Blowdown Valve, BA210
    Article Number: BA210
  8. Gestra Continuous Blowdown Valve, BA211
    Article Number: BA211
  9. Gestra Continuous Blowdown Valve, BA46
    Article Number: BA46
  10. Gestra Continuous Blowdown Valve, BA47
    Article Number: BA47
  11. Gestra Continuous Blowdown Valve, BAE210
    Article Number: BAE210
  12. Gestra Continuous Blowdown Valve, BAE211
    Article Number: BAE211
  13. Gestra Continuous Blowdown Valve, BAE46
    Article Number: BAE46
  14. Gestra Continuous Blowdown Valve, BAE47
    Article Number: BAE47
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17 items

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Top blowdown

Continual evaporation in the steam generating unit increases the dissolved solids content of the boiler water. This must be kept within the limits set by the boiler manufacturer, however, which are governed by the applicable directives. The boiler water or blowdown must therefore be evacuated either continuously or at intervals.

This is the task of the BAE valves. Their wear-resistant nozzle stem has a special geometry, whereby the needle is centrally located when it enters the system of nestling expansion chambers. Here, continuous boiler blowdown takes place at a very high differential pressure. The BAE valves are designed for operation in steam generating plants that conform to TRD 604, EN 12952 and EN 12953.


Bottom blowdown

Intermittent blowdown is achieved by the valve cone opening very quickly. This briefly produces "vacuum" at the bottom of the boiler. The resulting suction removes settled sediment on the floor of the boiler, also known as boiler sludge, from the boiler. The blowdown action is only effective for the first two seconds. Longer opening times lead to water losses.

The boiler pressure supports the closing force of the MPA valve spring, so that the valve closes reliably. The primary area of use is steam boiler plants. The intermittent blowdown action of the valves is triggered by controls such as the TA 7, for example. The control consists of an electronic cycling timer, a three-way solenoid valve and a strainer.