VFG 21, PN 16, DN 20, 6.30 m³/h, Flange

065B2503

VFG21 PN16 20/6,3 2-way flange flow/ret

Product details

Gross weight 6.85 Kilogram
Net weight 6.63 Kilogram
Volume 11.93 Liter
EAN 5702421804209

 

Application District Heating
Cavitation factor 0.6
Cavitation factor 100% 0.41
Cavitation factor 25% 0.69
Cavitation factor 50% 0.62
Cavitation factor 75% 0.6
China RoHS compliance Out of scope
Connection types Flange
Description VFG21 PN16 20/6,3 2-way flange flow/ret
Diameter [mm] 20 mm
Differential pressure range [bar] [Max] 16 bar
EU RoHS compliance Out of scope
Flow characteristic Linear optimized
Function Pressure relief
In scope of WEEE and contain batteries No
Kvs values [m³/h] 6.3 m³/h
Leakage through port max. [% Kvs] 0.01
Media pH [Max] 10
Media pH [Min] 7
Media temperature [°C] [Max] 150 °C
Media temperature [°C] [Min] 2 °C
Medium alternative Glycolic water up to 30%
Mounting version Free
Number of ports 2
Permissible media District heating/cooling circulation water
Pressure class PN 16
Pressure nominal [bar] 16 bar
Product Group Pressure flow controllers
REACH Candidate List substances 0.1 Lead (CAS no. 7439-92-1)
Sealing material EPDM
Spindle position Normally open
Stroke [mm] 6 mm
Type VFG 21
UK RoHS compliance Out of scope
Valve body material Grey cast iron EN-GJL-250 (GG-25)
Valve cone material Stainless steel, mat. No. 1.4404
Valve seat material Stainless steel, mat. No. 1.4021
Valve size DN 20

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