FFNV(w) Type Butterfly Valve
The FFNV(w) butterfly valve with the vulcanized seat is used when a flanged valve is required for mounting with bolts on each side of the valve. It is very used for buried services, since it does not require almost maintenance by the type of vulcanized ring to the body. Its design allows to be mounted at the end of the line.
Design construction:
- Body type: DOUBLE BRIDA & Vulcanized seat
- Characteristics’: Concentric and bidirectional
- Standard Design according to EN 593
- Face to face according to the following
- EN 558-1 Series 14
- ISO 5752 Series 14
- BS5155 Serie 3 larga
- Working temperature – 40 ºC a 210 ºC Depending on the components.
- Hydraulic test according to EN 12266 / ISO 5208 Rate A
- Top flange according to EN ISO 5211
- Assembly flange according to PN 10/16, ANSI cl. 150
Pressure Classes:
- 16 bar DN 40-150
- 16 bar DN 200-1000 optional
End Configurations:
- Suitable for ANSI 150, DIN N6/10/16 Flange.
Size Range:
- 16″ up to 40″ (DN 400 – 1000)
Field of Use:
- Naval industry
- Water treatment plants
- Pipelines water distribution
- Cooling systems
Body Materials:
- EN GJL-250 (DIN 1691 GG 25)
- EN GJS 400-15 (DIN 1693 GGG 40)
- ASTM A 216 / A216M WCB
- ASTM A 351 / 351M CF8 / CF8M
- EN 1982 CuSn10-C (CC480K)
- EN 1982 CuAl10Fe5Ni5-C (CC333G)
- EN 10025 S 275 JR
- AISI 304 / 316
- EN AC 47100 / EN AC 46100
Discs:
- EN GJS 400-15 (DIN 16913 GGG 40)
- ASTM A 216 / A216M WCB
- ASTM A 351 / 351M CF8/CF8M
- EN 1982 CuSn10-C (CC480K)
- EN 1982 CuAl10Fe5Ni5-C (CC333G)
- EN GJS 400-15 (DIN 1693 GGG 40) + EPDM
- EN AC 44100
- ASTM A 351 / 351M CD4MCu-N NORIDUR
- URANUS B6-904L
- 4469
Shafts:
- AISI 420 / 316
- 4410
- 4462
- MONEL 400/ MONEL K 500
O-Ring:
- NBR / VITON
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