
VFG 21, PN 16, DN 250, 400 m³/h, Flange
065B2514
VFG21 PN16 250/400 2-way flange flow/ret
Product specifications
Characteristic | Value |
---|---|
Application | District Heating |
Cavitation factor | 0.20 |
Cavitation factor 100% | 0.15 |
Cavitation factor 25% | 0.31 |
Cavitation factor 50% | 0.25 |
Cavitation factor 75% | 0.20 |
China RoHS compliance | Out of scope |
Connection types | Flange |
Contains batteries | No |
DG Indicator Profile | Not relevant for dangerous goods |
Description | VFG21 PN16 250/400 2-way flange flow/ret |
Diameter [mm] | 250 mm |
Differential pressure range [bar] [Max] | 10.00 bar |
EU RoHS compliance | Out of scope |
Flow characteristic | Linear optimized |
Function | Pressure relief |
Kvs values [m³/h] | 400.00 m³/h |
Leakage through port max. [% Kvs] | 0.01 |
Material Description | VFG21 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 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 Type | VFG 21 |
Product group | Pressure flow controllers |
Product line | District Energy Controls |
Sealing material | EPDM |
Spindle position | Normally open |
Stroke [mm] | 24.00 mm |
Valve body material | Grey cast iron EN-GJL-250 (GG-25) |
Valve cone material | Stainless steel, mat. No. 1.4021 |
Valve seat material | Stainless steel, mat. No. 1.4313 |
Valve size | DN 250 |
General specifications
Characteristic | Value |
---|---|
Gross weight | 340.5 Kilogram |
Net weight | 340.5 Kilogram |
Characteristic | Value |
---|---|
Volume | 244.688 Liter |
EAN/UPC | 5702421804315 |