| 摘要 |
A safety apparatus for a pressurised system comprises first 101 and second 102 safety valves, a system port 104 for connection to the pressurised system, and a connecting means 103. The first 101 and second 102 safety valves are connected to the system port 104 through the connecting means 103, and the connecting means 103 is arranged to individually isolate either the first or the second safety valve from the system port without isolating the other safety valve from the system port, thereby preventing both safety valves being isolated from the system port at the same time. |
