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VFY-LG Lug Type Butterfly Valve
Brand: Danfoss
VFY-LG (lug 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 that is 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, Rate A
Bushing Material
- Upper Guide Bush & Lower Guide Bush: Zinc Coated S + PTFE
Connection Style
- Lug (Tapped 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 50-150
- Ductile Iron (DIN GGG-40) DN 200-350
Flow Rate
- 79 to 8,520 m³/hour
Materials of Construction
- Circlip: Stainless Steel
- Circlip: Steel XC 75
- Gear Box: Aluminum
- Liner: EPDM
Media
- Circulation Water
- Drinking Water
- Glycolic Water up to 50 %
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
- Rotation Angle: 90°
Shaft Material
- 420 Stainless Steel
Valve Size
- 2” to 14” (DN 50 to DN 350)