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VFY-WG Wafer Type Butterfly Valve
Brand: Danfoss
VFY-WG (wafer type) are butterfly valves with gearbox suitable for district heating applications.
Features- Spline driven one piece shaft connected to spherically machined disc allows high torque transmission i.e. quick response and minimum back-lash
- Long term reliability due to upper and lower anti-friction bearings
- Safe maintenance: shaft blow out protection with circlip
- Position indicator
Specifications
Brand
Approvals & Certifications
- CE
- EAC
- PED 97/23/CE, EN 12266-1
Bushing Material
- Upper Guide Bush & Lower Guide Bush: Zinc Coated S + PTFE
Connection Style
- Wafer (Centering Lugs)
Disc Material
- Ductile Iron EN GJS 400-15 (DIN GGG-40) with Polyamide Coating
- Stainless Steel
Enclosure, Body Material
- Cast Iron EN GJL 250 (DIN GG-25) DN 50-300
- Ductile Iron (DIN GGG-40) DN 350
Flow Rate
- 79 to 8,520 m³/hour
Materials of Construction
- 316 Stainless Steel - Circlip
- Aluminum - Gear Box
- EPDM - Liner
- Steel XC 75 - Circlip
Media
- Circulation Water
- Drinking Water
- Glycolyc Water up to 50 %
Mounting
- Horizontal or Vertical
Nominal Pressure
- psi: 232.1 (bar: 16, kPa: 1,600)
O-Ring Material
- Nitrile
- Viton
Process Temperature
- -10° to 120° C (14° to 248° F) - Polyamide Disc
- -10° to 130° C (14° to 266° F) - Stainless Steel Disc
Rotation
- 90°
Shaft Material
- 420 Stainless Steel
Valve Size
- 2" to 14" (DN 50 to DN 350)
