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Gestra Non-return Valve, BB-C

Additional information

Connection Type

Acc. to EN 558-1

Material Body

Cast steel

Inner Parts

Cast steel, Chromium steel

Seat Sealing


GESTRA Non-return valve BB C with short overall length, acc. to EN 558-1, Tab 11, basic range 16 (K3 – builing length)

  • Installation in horizontal pipes or rather in vertical pipes with upward flow
  • Special spring for downward flow
  • Body – Centering directly on the body
  • Opening pressure: approx. 7 mbar

Nominal size:
DN 100 – DN 500

Pressure rating:
PN 10, PN 16, PN 25, PN 40
acc. to API 594: PN 63, PN 100, PN 160

End connections:

DN 100 – DN 125:
Body: Cast steel P 250 GH
Flap: Chromium steel X12Cr13

DN 150 – DN 500:
Body: Cast steel P 250 GH
Flap: Cast steel P 250 GH

Standard: Metal to metal

Optional: Soft sealing NBR, FPM, PTFE or EPDM

Optional design:
Damping, Special spring, earth connection, hard-faced seat, different materials