


| Parameter | Value |
|---|---|
| EAN () | 5702421809471 |
| Type () | VFQ 2 |
| Volume () | 88.8 Liter |
| Function () | Pressure relief |
| Net weight () | 39 Kilogram |
| Valve size () | DN 65 |
| Application () | District Heating |
| Description () | VFQ2 PN40 65/50 2-way flange flow/return |
| Stroke [mm] () | 12 mm |
| Gross weight () | 39 Kilogram |
| Diameter [mm] () | 65 mm |
| Product group () | Pressure flow controllers |
| Media pH [Max] () | 10 |
| Media pH [Min] () | 7 |
| Pressure class () | PN 40 |
| Number of ports () | 2 |
| Connection types () | Flange |
| Mounting version () | Free |
| Spindle position () | Normally open |
| Cavitation factor () | 0.5 |
| Permissible media () | District heating/cooling circulation water |
| EU RoHS compliance () | Out of scope |
| Kvs values [m³/h] () | 50 m³/h |
| Medium alternative () | Glycolic water up to 30% |
| UK RoHS compliance () | Out of scope |
| Flow characteristic () | Linear optimized |
| Valve body material () | GS-C 25 |
| Valve cone material () | Stainless steel, mat. No. 1.4404 |
| Cavitation factor 25% () | 0.53 |
| Cavitation factor 50% () | 0.51 |
| Cavitation factor 75% () | 0.5 |
| China RoHS compliance () | Out of scope |
| Cavitation factor 100% () | 0.44 |
| Pressure nominal [bar] () | 40 bar |
| Media temperature [°C] [Max] () | 200 °C |
| Media temperature [°C] [Min] () | 2 °C |
| REACH Candidate List substances () | Lead (CAS no. 7439-92-1) |
| Leakage through port max. [% Kvs] () | 0.03 |
| In scope of WEEE and contain batteries () | No |
| Differential pressure range [bar] [Max] () | 20 bar |
Technical specifications and performance data
Installation and operation guide