Danfoss logo
VFQ22_VFQ221

VFQ 221, PN 25, DN 80, 80.00 m³/h, Flange

065B5608

Pressure operated valves

Product specifications

Characteristic
Value
ApplicationDistrict heating and cooling
Cavitation factor0.55
Cavitation factor 100%0.50
Cavitation factor 25%0.70
Cavitation factor 50%0.63
Cavitation factor 75%0.57
Connection typesFlange
DescriptionPressure operated valves
DG Indicator ProfileNot relevant for dangerous goods
Diameter [mm]80 mm
Differential pressure range [bar] [Max]20.00 bar
In scope of WEEE and contain batteriesNo
Kvs values [m³/h]80.00 m³/h
Leakage rate [% Kvs]0.03
Leakage through port max. [% Kvs]0.03
Material DescriptionVFQ221 PN25 80/80 2-way flange flow/ret
Media pH [Max]10
Media pH [Min]7
Media temperature [°C] [Max]150 °C
Characteristic
Value
Media temperature [°C] [Min]2 °C
Medium alternativeGlycolic water up to 30%
Mounting versionFree
Number of ports2
Operating pressure [bar] [Max]25 bar
Permissible mediaDistrict heating/cooling circulation water
Pressure classPN 25
Pressure nominal [bar]25 bar
Pressure relieve systemChamber
Product groupPressure flow controllers
Product lineDistrict Energy Controls
Product TypeVFQ 221
Sealing DP materialEPDM
Valve body materialDuctile cast iron EN-GJS-400-18-LT (GGG 40.3)
Valve cone DP materialStainless steel mat. No. 1.4021
Valve cone materialStainless steel M. No. 1.4021
Valve seat DP materialStainless steel, mat. No. 1.4021
Valve seat materialStainless steel M. No. 1.4021
Valve sizeDN 80

General specifications

Characteristic
Value
Gross weight57.7 Kilogram
Net weight52.5 Kilogram
Characteristic
Value
Volume84 Liter
EAN5715162398685