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 waterhammer 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
A - B product overview English PRO_810815 Download PDF
GESTRA product range - technical information English PRO_850128 Download PDF
Přehled produktů Czech PRO_850600 Download PDF
Beknopt Leverprogramma Dutch PRO_850647 Download PDF

Data sheets (DBL)


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



Reference number



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Installation and maintenance instructions (BAN)

Document Language Reference number Download
Condensate drain valve AK 45 English BAN_810467 Download PDF
Opstart-aflaatklep AK 45 Dutch BAN_810532 Download PDF
Uppstarts-/dräneringsventil AK 45 Swedish BAN_810544 Download PDF

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