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Gestra Non-return Valve, BB-A

Additional information

Connection Type

Acc. to EN 558-1

Material Body

Stainless steel

Inner Parts

Stainless steel

Seat Sealing


GESTRA Non-return valve BB A 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 50 – 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 50 – DN 125:
Body: Stainless steel X2CrNiMo 17-12-2
Flap: Stainless steel X2CrNiMo 17-12-2

DN 150 – DN 500:
Body: Stainless steel 1.4408
Flap: Stainless steel 1.4408

Standard: Metal to metal

Optional: Soft sealing NBR, FPM, PTFE or EPDM

Optional design:
Damping, Special spring, earth connection