Main applications

  • Biofuels
  • Chemical industry
  • Food and beverages
  • General Processes
  • Industry engineering
  • Marine
  • Snow guns
  • Steel
  • Sugar

Technical data

T max 450 °C
DN max 400
PN max 40


Swing check valve to DIN/EN with flanged or butt weld ends, with bolted cover, internally mounted hinge pin, body of welded construction, seat/disc interface made of wear and corrosion resistant 17 % chrome steel.


Industrial plants, power stations, process engineering and shipbuilding. For water and steam. Other non-aggressive fluids such as gas or oil on request.

Further technical information about STAAL 40 AKK/AKKS

Overview of technical data

T -10 – 450 (°C)
DN 80 – 400
PN 40
Body design Straight pattern body
Dimension standard EN 12982, EN 558-1/1
Valve disc/plug material Metal-to-metal seat
Threaded-end design Flange design, butt weld end design
Body material (EN standard) 1.0345, 1.0425
Main applications Industry and process engineering, Energy, Shipping / Shipbuilding
Body material Forged steel
PN min. 10
Body/bonnet seal element Externally confined seal