根据系统的工作压力能自动启闭，一般安装于封闭系统的设备或管路上保护系统安全。
安全泄压阀用于通过泄漏阀或热膨胀防止容器的管子系统超压。
The purpose of the safety relief valve is to prevent over-pressuring of pipe systems of vessels either through leaking valves or due to thermal expansion.
第三，高压截止阀或者泄压阀坏了，即发生了内泄漏或者外泄露。
Third, high pressure cut-off valve and pressure relief valve is broken, the inside outside leakage or leakage happened.
这一点尤为重要的是监察夹运作，因为它清楚地显示经营者是否使用的是正确的泄压阀。
This is particularly important to those monitoring the operation of the clamps as it clearly displays whether the operator is using the pressure relief valve correctly.
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