| DN | 200mm~2400mm | |
| PN | 0.25~10MPa | |
| Pressure test | seat | 1.1*PN |
| shell | 1.5*PN | |
| Medium temperature | ≤425℃ | |
| medium | Steam, gas etc. | |
| Working pressure | 0.8*PN | |
| Opening/Closing time | 0.2~0.8s | |
The series high pressure quick closing gate valve (ESD/ESO emergency shutdown/shutoff valve) usually installed in the main steam turbine inlet steam , heating , etc. Extraction steam piping , TRT blast furnace gas and biomass power generating unit intake duct , as well as high level of safety of coal mine gas pipeline piping systems .
Under normal operating conditions , the valve opening and closing a constant speed and energy reserves ; when the system is in crisis conditions , the rapid release of energy reserves , emergency shut-off valve is driven within 0.2 to 0.8 seconds and achieve a reliable cut-off line , the host device to protect the pipe Safety.
| Part | C | I | P | R |
| Body | WCB,Q235,Q345 | ZG1Cr5Mo,WC6,WC9 | CF8(304) | CF8M(316) |
| disc | WCB,Q235,Q345 | ZG1Cr5Mo,WC6,WC9 | CF8(304) | CF8M(316) |
| stem | 20Cr13 | 25Cr2Mo1V | 06Cr19Ni10 | 06Cr17Ni12Mo2 |
| Suitable temperature | -29~425 | -29~550 | -29~600 | |
Note: Other materials are available upon request.
4.Structure
This product is mainly composed of valve body , drive unit, the hydraulic control unit , electric control unit and other components.
