| Technical Specifications | Product Scope |
|---|---|
| Product family | Hydrostatic test isolation valves |
| Selected series | SD61H |
| Size Range | DN225-DN1000; configuration-specific |
| Pressure Rating | Class300-3000SPL; special project ratings available |
| Body materials | WCB, WC6, WC9, C12A, A105, F22, F91, F92 and other specified grades |
| Typical installation | Superheater outlet; reheater inlet / outlet |
| Design references | ASME B16.34; JB/T3595, as applicable |
The isolation plate separates the required system sections during the overall hydrostatic test.
After testing, the test plate is replaced with a flow-guiding arrangement for normal operation.
Available body constructions accommodate different steam-line material and operating requirements.
SD61H-400SPL examples include DN800 / WCC cold-reheat arrangements; SD61H-960SPL examples include DN800 / F92 hot-reheat arrangements.
Temporary isolation for boiler hydrostatic testing.
Reheater-inlet and cold-leg isolation at the test boundary.
Test isolation in high-temperature reheat piping.
| Project Reference – Generating Units | Selected Specification / Material | Design Pressure (MPa) | Design Temperature (°C) |
|---|---|---|---|
| 2 x 1052MW ultra-supercritical | DN800; WCC | 6.7 | 355 |
| 2 x 1050MW ultra-supercritical | DN750; SA-105 | 7.4 | 374 |
| 2 x 1100MW ultra-supercritical | DN750; SA-105 | 7.25 | 390 |
Isolation-plate installation, the hydrostatic test boundary and flow-guide conversion define the test arrangement.
Pressure and leakage testing form part of the specified inspection scope.
Available project documentation can include valve drawings, model-specific datasheets, material records, inspection and test plans, test reports and operating instructions.
