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, RK41

Additional information

Material Body

Cast iron, Special brass

Inner Parts

Chromium steel, Nodular iron, Stainless steel, Steel

Seat Sealing

EPDM, FPM, Metal to metal

GESTRA DISCO Non-return valve RK 41 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
  • Spring for different opening pressures available
  • Opening pressure 5 mbar for DN 15 – DN100; 10 mbar for DN 125 – DN 200

Nominal size:
DN 15, DN 20, DN 25, DN 32, DN 40, DN 50, DN 65, DN 80, DN 100,
DN 125, DN 150, DN200

Pressure rating:
PN 6, PN 10, PN 16

End connections:

DN 15-100:
Body, Seat, Guide ribs: Special brass CW 710 R
Disc, Control spring, Spring: Stainless steel 1.4571

DN 125 – DN200:
Body, Guiding: Cast iron EN-JL 1040
Spring: Stainless steel 1.4571
Cone, Adapter: Nodular cast iron EN-GJS-400-15
Guiding: Steel UZSt37-2
Casing: Chromium steel X5CrNi18-10

Metal to metal

Soft sealing EPDM or FPM