The guide provides technical data and application information for the VVI41 and VXI41 series of HVAC flow control valves. It describes the intended use in heating, cooling and mixed water systems, and lists the required standards such as DIN 32730, VDI 2173 and ISO 71.
Detailed specifications, dimensions, material data, and step‑by‑step installation procedures are included. The document also covers safety precautions, recommended heating elements for low‑temperature operation, and maintenance advice. This manual is written in Chinese.
| Nominal diameter | DN15–DN50 |
|---|---|
| Flow rate | 2.5–40 m³/h |
| Working temperature range | -25 °C to +140 °C |
| Maximum working pressure | 1600 kPa (16 bar) |
| Body material | Bronze CC491K (Rg5) |
| Sealing material | EPDM‑O |
The valves are available with nominal diameters from DN15 to DN50.
Use the ASZ6.5 heating element rated at 24 V to prevent sealing material freezing.
The maximum working pressure is 1600 kPa (16 bar).
The valve body is made of bronze CC491K (Rg5).