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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Technical Data

  • Nominal pressurePN 10, PN 16, PN 25, PN 40
  • Max. nominal sizeDN 400
  • Max. allowed fluid temperature450 °C

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.

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Documents

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icon download-pdfOperating manual (0570.81_EN)pdf10.911/9/2019
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Technical Data

  • FunctionPrevent backflow
  • Connection typeFlange, Butt weld ends
  • Casing material0520, 0522
  • Nominal pressurePN 10, PN 16, PN 25, PN 40
  • Max. nominal sizeDN 400
  • Min. nominal sizeDN 80
  • Max. allowed fluid temperature450 °C
  • Min. allowed fluid temperature-10 °C

Sectional Drawings

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