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STAAL 40 AKK/AKKS Swing check valve

Swing check valve STAAL 40 AKK/AKKS

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

  • Chemical industry
  • Boiler feed applications
  • Boiler recirculation
  • Cooling circuits

Technical Data

Nominal pressure Hydr casing
PN 10, PN 16, PN 25, PN 40
Maximum nominal size TSG
DN 400
Max allowed fluid temp TSG
450 °C

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Benefits

  • Additional features ensure safe sealing to atmosphere: Risk of leakage is reduced by internally mounted hinge pin. The hinge pin mounting bracket is welded directly to the inside of the cover, so no additional seal to atmosphere is required.
  • 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

Component function
Prevent backflow
Connection type Inlet
Flange,
Butt weld ends
Mtrl Hydraulic casing
P265GH,
P235GH
Nominal pressure Hydr casing
PN 10,
PN 16,
PN 25,
PN 40
Maximum nominal size TSG
DN 400
Minimum nominal size TSG
DN 80
Max allowed fluid temp TSG
450 °C
Min allowed fluid temp TSG
-10 °C

Sectional Drawings

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