VFG 21, 6.30 m³/h, Flange


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

Product details

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


Application District Heating
Cavitation factor 0.6
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
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 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
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


Spare Parts






Software and firmware to extend functionality