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Gestra Non-return Valve, BB-G

Additional information

Connection Type

Acc. to EN 558-1

Material Body

Cast iron

Inner Parts

Nodular iron

Seat Sealing


GESTRA Non-return valve BB G 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 150 – DN 500

Pressure rating:
PN 6, PN 10, PN 16

End connections:

Body: Cast iron EN-JL-1040
Flap: Nodular iron EN-JS-1030

Standard: Soft sealing EPDM

Optional: Soft sealing NBR, FPM or metal to metal

Optional design:
Damping, Special spring, earth connection, hard-faced seat, different materials, gummed body or Vestosint coated