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: PN 10, PN 16, PN 25, PN 40
Max. nominal size: DN 400
Maximum allowable fluid temperature: 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

Function: Prevent backflow
Connection type: Flange,
Butt weld ends
Casing material: P265GH,
P235GH
Nominal pressure: PN 10,
PN 16,
PN 25,
PN 40
Max. nominal size: DN 400
Min. nominal size: DN 80
Maximum allowable fluid temperature: 450 °C
Minimum allowable fluid temperature: -10 °C

Sectional Drawings

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