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 |
| Description | VFG21 PN16 250/400 2-way flange flow/ret |
| DG Indicator Profile | Not relevant for dangerous goods |
| 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 group | Pressure flow controllers |
| Product line | District Energy Controls |
| Product Type | VFG 21 |
| 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 |