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2-way seated valve type VFG 2

VFG 21, PN 16, DN 250, 400 m³/h, Flange

065B2514

VFG21 PN16 250/400 2-way flange flow/ret

Product specifications

Characteristic
Value
ApplicationDistrict Heating
Cavitation factor0.20
Cavitation factor 100%0.15
Cavitation factor 25%0.31
Cavitation factor 50%0.25
Cavitation factor 75%0.20
China RoHS complianceOut of scope
Connection typesFlange
Contains batteriesNo
DG Indicator ProfileNot relevant for dangerous goods
DescriptionVFG21 PN16 250/400 2-way flange flow/ret
Diameter [mm]250 mm
Differential pressure range [bar] [Max]10.00 bar
EU RoHS complianceOut of scope
Flow characteristicLinear optimized
FunctionPressure relief
Kvs values [m³/h]400.00 m³/h
Leakage through port max. [% Kvs]0.01
Material DescriptionVFG21 PN16 250/400 2-way flange flow/ret
Media pH [Max]10
Characteristic
Value
Media pH [Min]7
Media temperature [°C] [Max]150 °C
Media temperature [°C] [Min]2 °C
Medium alternativeGlycolic water up to 30%
Mounting versionFree
Number of ports2
Permissible mediaDistrict heating/cooling circulation water
Pressure classPN 16
Pressure nominal [bar]16 bar
Product TypeVFG 21
Product groupPressure flow controllers
Product lineDistrict Energy Controls
Sealing materialEPDM
Spindle positionNormally open
Stroke [mm]24.00 mm
Valve body materialGrey cast iron EN-GJL-250 (GG-25)
Valve cone materialStainless steel, mat. No. 1.4021
Valve seat materialStainless steel, mat. No. 1.4313
Valve sizeDN 250

General specifications

Characteristic
Value
Gross weight340.5 Kilogram
Net weight340.5 Kilogram
Characteristic
Value
Volume244.688 Liter
EAN/UPC5702421804315