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.
只要阀门关闭效果良好，保压时，高压截止阀关闭，后端压力容积变小，压力增大。
As long as the valve closure effect is good, when the pressure, high pressure cut-off valve is closed, the back-end pressure volume smaller, pressure.
如果泄压口正常，那么，不接工件，用高压截止阀截断压力，看试验机本身能否保住压力。
If the discharge pressure is normal, so, don't answer the artifacts, cutting with high pressure cut-off valve pressure, see if we can keep pressure testing machine itself.
当通过阀门的压降为管路压力的20%左右时，美国克雷恩截止阀就能够高效应用在频繁操作和节流的应用场合。
Crane globe valves are highly efficient for services requiring frequent operation and throttling when pressure drop across the valve is about 20% of inlet pressure.
形压降最小，即使与通用的直立式截止阀比较也是如此。
The Y-pattern style has a minimal pressure-drop, even when compared with a conventional upright style globe valve.
与倾斜式结构相比，直线式结构截止阀在全开位置具有更高的压差(压力损失)。
The full open position in straight pattern globe valves has higher differential pressure (pressure losses) than an oblique pattern valve.
与倾斜式结构相比，直线式结构截止阀在全开位置具有更高的压差(压力损失)。
The full open position in straight pattern globe valves has higher differential pressure (pressure losses) than an oblique pattern valve.
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