The valve is suitable for area heating systems, HVAC systems as a control valve or safety shut-off valve in accordance with DIN 32730 standard. It is suitable for open and closed systems
This manual describes the two‑way flange connection valve rated PN40, intended for district heating and HVAC systems. It lists applicable media, pressure and temperature limits, and compatible actuator series.
The document includes technical data such as nominal diameters, flow coefficients, stroke lengths, material specifications, as well as detailed installation, selection, and maintenance procedures. This manual is written in Chinese.
| Nominal diameter | DN15 – DN150 mm |
|---|---|
| Working temperature range | -25 °C … +300/350 °C |
| Flow coefficient (kv) | 0.19 – 300 m³/h |
| Stem stroke | 20 mm or 40 mm |
| Body material DN15/DN25 | Cast steel GS‑C25N |
| Body material DN40‑DN150 | Cast steel GS‑45 |
| Compatible actuator series | SQX, SKD, SKB |
The maximum temperature is 350 °C for the GS‑C25N material (DN15/25) and 300 °C for the GS‑45 material (DN40‑150).
It can be installed with SQX, SKD, and SKB series actuators.
Install the valve on the return pipe to keep the temperature low and place a filter upstream; ensure the flow‑direction marking matches the actual flow.