| Code number | 065Z5421 |
| EAN | 5702421526637 |
| Net weight | 0.506 Kilogram |
| Application | Heating and cooling |
| Application alternative VSP | Hot water |
| China RoHS exemption clause | 7.3 |
| Connection size | G 3/4 |
| Connection types | External thread ISO 228/1 |
| Control ratio | 50:1 |
| Description | HVZ 3 PN16 20/4 2-way seated flat end |
| Diameter [mm] | 20 mm |
| EU RoHS compliance | Yes with exemptions |
| Flow characteristic | Logarithmic |
| Function | Mixing valve |
| Kvs value (B-AB) [m³/h] | 2.50 m³/h |
| Kvs values [m³/h] | 4.00 m³/h |
| Leakage through port (B-AB) max. [% Kvs] | 1.0 |
| Leakage through port max. [% Kvs] | 0.05 |
| Medium alternative | Glycolic water up to 50% |
| Mounting version | Free |
| Number of ports | 3 |
| Permissible media | District heating/cooling circulation water |
| PN alternative VSP | 10 |
| Pressure nominal [bar] | 16 bar |
| Product group | Other valves |
| Product line | Hydronic Balancing and Controls |
| Product Type | VZ 3 |
| Spindle position | A-AB: Normally closed |
| Stroke [mm] | 5.50 mm |
| Stuffing box sealing material | EPDM |
| Valve body material | DZR brass CuZn36Pb2AS (CW 602N) |
| Valve cone material | DZR brass CuZn36Pb2AS (CW 602N) |
| Valve seat material | DZR brass CuZn36Pb2AS (CW 602N) |
| Valve stem material | Stainless steel |
| Closing differential pressure (diverting) [bar] | 1.0 bar |
| Closing differential pressure (mixing) [bar] | 2.5 bar |
| Media pH | 7 … 10 |
| Media temperature [°C] | 2 °C … 120 °C |
| Gross weight | 0.506 Kilogram |
| Volume | 0.638 Liter |
| Type | VZ 3 |
