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AKR/AKRS Swing check valve

Swing check valve AKR/AKRS

Swing check valve to DIN/EN with flanged ends (AKR) or butt weld ends (AKRS), pressure seal design, internally mounted hinge pin, body of forged and welded construction, seat/disc interface made of wear and corrosion resistant 17 % chrome steel or Stellite.
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Main Applications

  • Fossil-fuelled power stations
  • Process engineering
  • Boiler feed applications
  • Boiler recirculation

Technical Data

  • Nominal pressurePN 63, PN 100, PN 160
  • Max. nominal sizeDN 300
  • Max. allowed fluid temperature550 °C

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  • Added safety due to pressure seal design providing increased sealing to atmosphere: The higher the pressure in the valve body, the tighter the cover joint. Very low risk of leakage, particularly at high pressures and temperatures. Compact design.
  • Reliable, tight shut-off and service-friendly design due to flexibly mounted valve disc. Precise alignment of valve disc with body seat; valve disc is easy to replace.
  • Hard-faced seat/disc interface made of wear-resistant and corrosion-proof 17 % chrome steel or Stellite for long service life and high functional reliability.

Technical Data

  • FunctionPrevent backflow
  • Connection typeFlange,
    Butt weld ends
  • Casing materialP250GH,
  • Nominal pressurePN 63,
    PN 100,
    PN 160
  • Max. nominal sizeDN 300
  • Min. nominal sizeDN 80
  • Max. allowed fluid temperature550 °C
  • Min. allowed fluid temperature-10 °C

Sectional Drawings


Last change
Declaration of Conformity (0570.8520_EN)PDF0.175/23/2022
Declaration of Conformity UKCA (0570.85207_EN)PDF0.179/20/2022
Last change
Operating manual (0570.81_EN)PDF11.435/24/2023
Last change
AKR/AKRS (7373.1_EN)PDF2.15/10/2023