Bottom Blowdown Valves

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Bottom blowdown valves

Deposits build up very quickly at the bottom of industrial steam boilers. 

The way to remove these deposits effectively is by very rapidly opening and closing a valve at the bottom of the boiler. This is called intermittent blowdown. 

It is an extremely demanding application which requires a robust and reliable product. 

The GESTRA bottom blowdown valve achieves this by opening very quickly (for just 2 seconds), producing a vacuum at the bottom of the boiler. 

The resulting suction removes settled sediment, known as sludge, from the bottom of the boiler. 

When the valve closes, its design ensures tight shut-off with no leakage. 

Opening the valve for longer than 2 seconds has no further effect on reducing blowdown and simply wastes water.

What are the features?

  • Quick removal of sediment stopping buildup
  • Extends the life of your boiler
  • Reduces carbon emissions
  • Minimal water and energy losses, reducing costs
  • Reduces boiler carryover for better steam quality and improved plant productivity

Sales brochures (PRO)

Document Language Reference number Download
A - B Product overview English PRO_810815 Download PDF
Product range technical information, 2021 English PRO_850128 Download PDF
Programme court French PRO_818821 Download PDF

Data sheets (DBL)

Document Language Reference number Download
Blowdown Timer PRS 50 English DBL_850651 Download PDF
Intermittent Blowdown Valves Type PB24C (Key Handle) and MPB24C (Actuated) English DBL_FCD GSEDS0043 Download PDF
Programme-Controlled Blowdown System TA 5, TA 6 English DBL_818559 Download PDF
Programme-Controlled Blowdown System TA 7 English DBL_818557 Download PDF
Rapid-Action Intermittent Blowdown Valve PA 110, MPA 110 PN 160/250, CL 600/900/1500 DN 25 English DBL_810445 Download PDF
Rapid-Action Intermittent Blowdown Valve PA 46, PN 40 / CLASS 150 / 300, DN 20-50 PA 47, PN 63 / CLASS 600, DN 25, 40, 50 PA 48, PN 100 / CLASS 600, DN 25, 40, 50 MPA 46, PN 40 / CLASS 150 / 300, DN 20-50 MPA 47, PN 63 / CLASS 600, DN 25, 40, 50 MPA 48, PN 100 / CLASS 600, DN 25, 40, 50 English DBL_818424 Download PDF
Robinets de purge et d’extraction à fermeture rapide PA 46, PN 40 / CLASS 150 / 300, DN 20-50 PA 47, PN 63 / CLASS 600, DN 25, 40, 50 PA 48, PN 100 / CLASS 600, DN 25, 40, 50 MPA 46, PN 40 / CLASS 150 / 300, DN 20-50 MPA 47, PN 63 / CLASS 600, DN 25, 40, 50 MPA 48, PN 100 / CLASS 600, DN 25, 40, 50 French DBL_818519 Download PDF

Installation and maintenance instructions (BAN)

Document Language Reference number Download
Rapid-action intermittent blowdown valve PA 110, MPA 110 English BAN_819045 Download PDF
Rapid-action intermittent blowdown valve PA 46, PA 47, PA 48, MPA 46, MPA 47, MPA 48 English BAN_818447 Download PDF
Robinet de purge et d’extraction à fermeture rapide PA 110, MPA 110 French BAN_819652 Download PDF
Robinet de purge et d’extraction à fermeture rapide PA 46, PA 47, PA 48, MPA 46, MPA 47, MPA 48 French BAN_819018 Download PDF

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