AK Automatic Drainage Valve

Discharge air and condensate on start-up

The AK 45 automatic drainage valve rapidly and automatically discharges air and condensate from steam systems on start-up and drains residual fluid when the system is shut down. 

The integrated spring enables the AK 45 to open without pressure. 

The valve closes as soon as the operating pressure increases to the closing pressure set. If the operating pressure falls below the closing pressure once more, the AK 45 is opened by a spring force and drains residual fluid preventing the formation of a vacuum.

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What are the features?

  • Protect from frost
  • Reduce water hammer risk
  • Corrosion resistant
  • Hand-purging device to remove dirt

Sales brochures (PRO)

Document Language Reference number Download
Steam traps and monitoring equipment English PRO_810124 Download PDF
Purgeurs et appareils de commande French PRO_810126 Download PDF
A - B product overview English PRO_810815 Download PDF
Programme court French PRO_818821 Download PDF
GESTRA product range - technical information English PRO_850128 Download PDF

Data sheets (DBL)


Condensate Drain Valve AK 45 PN 40, DN 15, 20, 25 (½", ¾", 1")



Reference number



Download PDF

Installation and maintenance instructions (BAN)

Document Language Reference number Download
Condensate drain valve AK 45 English BAN_810467 Download PDF
Robinet de purge au démarrage AK 45 French BAN_818925 Download PDF

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