Swing check valve AKR/AKRS

Swing check valve to DIN/EN with flanged ends (AKR) or butt weld ends (AKRS), pressure seal design, internally mounted hinge pin, body of forged and welded construction, seat/disc interface made of wear and corrosion resistant 17 % chrome steel or Stellite.

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Main Applications

Fossil-fuelled power stations
Process engineering
Boiler feed applications
Boiler recirculation

Technical Data

Nominal pressure: PN 63, PN 100, PN 160
Max. nominal size: DN 300
Maximum allowable fluid temperature: 550 °C

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Benefits

Added safety due to pressure seal design providing increased sealing to atmosphere: The higher the pressure in the valve body, the tighter the cover joint. Very low risk of leakage, particularly at high pressures and temperatures. Compact design.
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: P250GH,
13CRMO4-5
Nominal pressure: PN 63,
PN 100,
PN 160
Max. nominal size: DN 300
Min. nominal size: DN 80
Maximum allowable fluid temperature: 550 °C
Minimum allowable fluid temperature: -10 °C

Sectional Drawings

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