| DN | 100mm~600mm | |
| PN | 0.25~4MPa | |
| Pressure test | seat | 1.1*PN |
| shell | 1.5*PN | |
| Medium temperature | ≤425℃ | |
| medium | Steam, gas etc. | |
| Working pressure | 0.8*PN | |
Hydraulic needle valve is mainly used for the inlet valve of the bypass pipe Hydropower Station. By the governor as a working oil source , control valve opening and closing .
