Main applications

  • Biofuels
  • Boiler circulation
  • Boiler feed systems
  • Chemical industry
  • District heating
  • Energy
  • Food and beverages
  • General Processes
  • Industry engineering
  • Marine
  • Nuclear Power Stations
  • Power Stations < 100 MW
  • Power Stations > 100 MW
  • Snow guns
  • Steam circuits
  • Steel
  • Sugar
  • Turbine Island

Design type

Non-return valves

Technical data

T max 550 °C
DN max 300
PN max 160


Flanged or weld end swing check valve in pressure seal design, with internal hinge pin forged / welded body; seats made of wear and corrosion resistant 17 % Cr steel or stellite.


In industrial plants, power stations, process engineering and shipbuilding. For water, steam, gas, oil and other non-aggressive fluids. Other fluids on request.

Further technical information about AKR/AKRS

Overview of technical data

T -10 – 550 (°C)
DN 80 – 300
PN 160
Body design Straight pattern body
Dimension standard EN 558-1/26 PN 63-100, DIN 3202/1-F8 PN 160
Valve disc/plug material Metal-to-metal seat
Threaded-end design Flange design, butt weld end design
Body material (EN standard) 1.0460, 1.7335
Main applications Industry and process engineering, Energy, Shipping / Shipbuilding
Body material Forged steel
Body/bonnet seal element Pressure seal bonnet