Low and medium pressure swing check valve

NRK, MRK
  • Prevention of black flow in low and medium pressure water and steam lines

  • In nuclear power plants in Germany (Biblis)

  • Globe type. Weld end or flange connections available. Further versions available on request

    Body material
    Ferrite, Austenite
    Sizes
    DN 50 to DN 300
    (Dye forged shell body)

    DN 350 to DN 600
    (Welded body)
    Pressure Class
    Up to PN 64
    Low Pressure

    > PN 64 to PN 160
    Medium Pressure
    Operating temperatures
    Up to 350 °C
    Seat hard facing
    Stellite 21
    Cobalt free: NIBORIT 40-P