原文：
无论是使用新阀门，还是使用修复后的阀门，安装前必须试压试漏。 试压，指的是阀体强度试验。试漏，指的是密封面严密性试验，这两项试验是对阀门主要性能的检查。 试验介质，一般是常温清水，重要阀门可使用煤油。安全阀定压试验，可使用氮气较稳定气体，也可用蒸汽或空气代替。对于隔膜阀，使用空气作试验。 （一）试验压力 阀门强度试验压力，与公称压力有下列关系 公称压力（Mpa） 强度试验压力（Mpa） 0.1 0.2 0.25 0.4 0.4 0.6 0.6 0.9 1.0 1.5 1.6 2.4 2.5 3.8 4.0 6.0 6.4 9.6 10.0 15.0 16.0 24.0 20.0 30.0 25.0 38.0 32.0 48.0 由上可见，公称压力从0.4Mpa-32Mpa，这些常用压力阀门，其强度试验压力为其1.5倍。 阀门密封试验压力，等于公称压力。 （二）试验方法 试压试漏，在试验台上进行。试验台（如图5-1）的结构，试验台上面有 一压紧部件，下面有一条与试压泵相连通的管路。将阀压紧后，试压泵工作，从试压泵的压力表上，可以读出阀门承受压力的数字。试压阀门充水时，要将阀内空气排净。试验台上部压盘，有排气孔，用小阀门开闭。空气排净的标志是，排气孔中出来的全部都是水。 关闭排气孔后，开始升压。升压过程要缓慢，不要急剧。达到规定压力后，保持3分钟，压力不变为合格。 试压试漏程序可以分三步： 1、打开阀门通路，用水（或煤油）充满阀腔，并升压至强度试验要求 压力，检查阀体，阀盖、垫片、填料有无渗漏。 2、关死阀路，在阀门一侧加压至公称压力，从另一侧检查有无渗漏。 3、将阀门颠倒过来，试验相反一侧。

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译文：
Whether to use the new valve, or valve after using the repair install before pressure test leak testing. Pressure test, referring to the valve body strength test. Leak testing, referring to the strict test of sealing surface, the two main performance test is a check valve. Test medium, typically room temperature water, the valve can be important to use kerosene. Safety valve set pressure test, use the more stable nitrogen gas, steam or air can also be replaced. For the diaphragm, the use of air for testing. (A) Test pressure Valve pressure strength test, the following relationship with the nominal pressure Nominal pressure (Mpa) Strength Test Pressure (Mpa) 0.1 0.2 0.25 0.4 0.4 0.6 0.6 0.9 1.0 1.5 1.6 2.4 2.5 3.8 4.0 6.0 6.4 9.6 10.0 15.0 16.0 24.0 20.0 30.0 And 25.0 by 38.0 32.0 48.0 Is clear from the nominal pressure from 0.4Mpa-32Mpa, the common pressure valve, the strength of its 1.5 times the test pressure. Valve sealing test pressure equal to nominal pressure. (B) Test Method Leakage pressure test, the test stand. Test rig (Figure 5-1) structure, a compression test rig components above, here is one with the test pump connected through a pipeline. Compress the valve after the pressure test pump work, from the test pump pressure gauge, you can read out the number of pressure valves. Sufficient water pressure test valve, air valve arrangement to net. Department of pressure plate test stand, a row of holes, with a small valve opening and closing. Sign of the net emission of air is vent out all the water. Close the vent, it begins to boost. Step process to slow and not sharp. After the required pressure, for 3 minutes, the pressure change in compliance. Pressure test leak testing procedures can be in three steps: 1, open the valve channel, water (or kerosene) is full of valve chamber and the pressure boost to the strength test requirements, check valve, valve covers, gaskets, fill any leaks. 2, closed the valve path to the nominal pressure at the valve side of the pressure, from the other side to check for leaks. 3, reversed the valve, test the opposite side.