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Gestra DISCO Non-Return Valve, RK49

Additional information

Material Body

Forged steel, Stainless steel

Inner Parts

Forged steel, Nimonic, Stainless steel

Seat Sealing

Metal to metal

GESTRA DISCO Non-return valve RK 49 for flanges, wafer design with short overall length acc. to EN 558-1, Tab. 11, series 52.

  • Installation in any position
  • Body centering by spiral ring or rather directly on the body
  • Opening pressure 40 mbar

Nominal size:
DN 15 – DN 200

Pressure rating:
PN 63, PN 10, PN 160
ASME CL 400, CL 600, CL 900

End connections:

DN 15 – DN 65
Body, seat, guide ribs: stainless steel 1.4581
Disc: forged steel 1.4986
Spring: Nimonic 90

DN 80 – DN 200
Body, guiding: forged steel high temperature 1.7357
Valve cone: forged steel 1.4923
Insert: stainless steel 1.4581
Spring: Nimonic 90

Sealing: Metal to metal