Key facts
- Brand
- Siemens
- Model
- VVI41
- Documents
- 2
- Languages
- ZH
- Last added
- 2011-11-12
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Siemens VVI41/VXI41 Two‑Way/Three‑Way Seat Valve Installation Guide
This manual provides an overview of the Siemens VVI41 and VXI41 two‑way/three‑way seat valves, including their construction, material, and applicable standards. It lists the nominal diameters, flow rates, pressure ratings and operating temperature ranges for each model.
Detailed installation instructions cover recommended pipe placement, actuator selection, heating element requirements for sub‑zero temperatures, and safety procedures for commissioning and maintenance. Dimensions, weights and connection details are also included. This manual is written in Chinese.
Siemens VVI41 specifications
| Nominal diameter (DN) | DN15‑DN50 |
|---|---|
| Flow rate (kvs) | 2.5 – 40 m³/h |
| Pressure rating | PN16 |
| Valve body material | Bronze CC491K (Rg5) |
| Operating temperature range | -25 °C – +140 °C |
| Maximum working pressure | 1600 kPa (16 bar) |
| Stroke | 20 mm |
Source: Siemens VVI41/VXI41 Two‑Way/Three‑Way Seat Valve Installation Guide
All Siemens VVI41 documents by type
Mounting, wiring and first power-up. Read it before the hardware goes in.
Questions answered in these manuals
Where should the valve be installed for optimal lifespan?
It is recommended to install the valve on the return pipe of the heating system, where the temperature is lower, to extend the seal material’s life.
From: Siemens VVI41/VXI41 Two‑Way/Three‑Way Seat Valve Installation Guide
What is the nominal diameter range of the VVI41/VXI41 valves?
The valves are available with nominal diameters from DN15 to DN50.
Which heating element should be used for low‑temperature operation below 0 °C?
Use the ASZ6.5 heating element rated at 24 V to prevent sealing material freezing.