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Gestra DISCO Non-Return Valve, RK44S

Additional information

Material Body

Bronze, Cast iron

Inner Parts

Bronze, Stainless steel, Tin bronze

Seat Sealing

EPDM, FPM, Metal to metal

GESTRA DISCO Non-return valve RK 44S for flanges, wafer design with short overall length acc. to EN 558-1, Tab. 11, series 49

  • Installation in any position
  • Body centering by spiral ring or rather directly on the body
  • Opening pressure 5 mbar for DN 15 – DN100; 10 mbar for DN 125 – DN 200

Nominal size:
DN 15 – DN 200

Pressure rating:
PN 6, PN 10, PN 16

End connections:

DN 15-100:
Body, Seat, Guide ribs: Bronze CC 480 K-GS
Disc: Bronze CC 480 K
Control spring: CuNi10Fe CW352H
Spring: Tin bronze CW452K

DN 125 – DN200:
Body, Guiding: Cast iron EN-JL 1040
Cone, Adapter, Guiding, Casing: Bronze CC 480 K-GS
Spring: Stainless steel 1.4571

Metal to metal

Soft sealing EPDM or FPM