Our website is still in development. Please don't hesitate to contact us with any questions regarding the company or our products.

Gestra DISCO Non-Return Valve, RK70

Additional information

Material Body

Cast iron, Hot-pressed brass

Inner Parts

Chromium steel, Stainless steel, Steel

Seat Sealing

Soft sealing

GESTRA DISCO Non-return valve RK 70 for flanges, wafer design with short overall length acc. to EN 558-1, Tab. 11, series 49 (K4 building length).

  • Installation in any position
  • Body centering by spiral ring or rather directly on the body
  • Opening pressure: approx. 25 mbar for DN 15 – DN 100, 5 mbar for DN 125 – DN 200

Nominal size:
DN 15 – DN 200

Pressure rating:
PN 6

End connections:

DN 15 – 100:
Body, Seat, Guiding rib: hot-pressed brass CW 617 N
Disc, O-Ring: PPE/EPDM
Control Spring, Closing Spring: Stainless steel 1.4571

DN 125 – 200:
Body, Guiding: Cast iron EN-JL 1040
Cone, Adapter: Polyamid 6
Cover: Chromium steel 1.4301
Guiding: Steel UZSt 37-2
Spring: Stainless steel 1.4571

Sealing: Soft sealing