1) In general, strength tests are not conducted on valves, but strength tests should be conducted on repaired or corroded valve bodies and covers. For safety valves, their constant pressure, reseating pressure, and other tests should comply with the instructions and relevant regulations.

(2)阀门安装之彰应作强度和密封性试验。低压阀门抽查20%，如不合格应100%的检查;中、高压阀门应100%的检查。

(2) The valve installation should undergo strength and sealing tests. 20% of low-pressure valves shall be randomly inspected, and if they are not qualified, 100% of them shall be inspected; Medium and high pressure valves should be 100% inspected.

(3)试验时，阀门安装位置应在容易进行检查的方向。

(3) During the test, the valve should be installed in a direction that is easy to inspect.

(4)焊接连接形式的阀门，用肓板试压不行时可采用锥形密封或O型圈密封进行试压。

(4) When blind plate pressure testing is not feasible for valves connected by welding, conical seals or O-ring seals can be used for pressure testing.

(5)液压试验时就将阀门空气尽量排除。

(5) During the hydraulic test, try to exhaust the valve air as much as possible.

(6)试验时压力要逐渐增高，不允许急剧、突然地增压。

(6) During the test, the pressure should gradually increase and sudden pressure increase is not allowed.

(7)强度试验和密封性式验持续时间一般为2~3min，重要的和特殊的阀门应持续5min。小口径阀门试验时间可相应短一些，大口径阀门试验时间可相应长一些。在试验过程中，如有疑问可延长试验时间。强度试验时，不允许阀体和阀盖出现冒汗或渗漏现象。密封性试验，一般阀门只进行一次，阀、高压阀等生要阀门需进行两次。试验时，对低压、大口径的不重要阀门以及有规定允许渗漏的阀门，允许有微量的渗漏现象;由于通用阀门、电站用阀、船用阀门以及其他阀门要求各异，对渗漏要求应按有关规定执行。

(7) The duration of strength test and sealing test is generally 2-3 minutes, and important and special valves should last for 5 minutes. The testing time for small diameter valves can be correspondingly shorter, while the testing time for large diameter valves can be correspondingly longer. During the testing process, if there are any doubts, the testing time can be extended. During the strength test, sweating or leakage is not allowed on the valve body and valve cover. Sealing test is generally only conducted once for valves, and twice for safety valves, high-pressure valves, and other essential valves. During the test, minor leakage is allowed for valves with low pressure and large diameter, as well as valves with specified allowable leakage; Due to the different requirements for general valves, power station valves, marine valves, and other valves, leakage requirements should be implemented in accordance with relevant regulations.

(8)节流阀不作关闭件密封性试验，但应作强度试验及填料和垫片处的密封性试验。

(8) The throttle valve does not undergo a sealing test for the closing part, but should undergo a strength test and a sealing test at the packing and gasket.

(9)试压中，阀门关闭力只允许一个人的正常体力来关闭;不得借助杠杆之类工具加力(除扭矩扳手外)，当手轮的直径大于等到于320mm时，允许两人共同关闭。

(9) During pressure testing, the valve closing force only allows one person's normal physical strength to close; Do not use tools such as levers to apply force (except for torque wrenches). When the diameter of the handwheel is greater than or equal to 320mm, two people are allowed to close it together.

(10)具有上密封的阀门应取出填料作密封性试验，上密封官合后，检查是否渗漏。用气体作试验时，在填料函中盛水检查。作填料密封性试验时，不允许上密封处于密位置。

(10) Valves with upper seals should have their packing removed for a sealing test. After the upper seal is closed, check for leakage. When using gas for testing, check with water in the stuffing box. When conducting sealing tests on fillers, it is not allowed to have the upper seal in a tight position.

(11)凡具有驱动装置的阀门，试验其密封性时应用驱动装置关闭阀门拮进行密封性试验。对手动驱动装置，还应进行用动关闭阀门的密封试验。

(11) For valves with a driving device, the sealing test should be conducted by closing the valve with the driving device. For manual drive devices, a sealing test should also be conducted to manually close the valve.

(12)强度试验和密封性试验后装在主阀上的旁通阀，在主阀进行强度和密封性试验;主阀关闭件打开时，也应随之开启。

(12) The bypass valve installed on the main valve after strength and sealing tests shall undergo strength and sealing tests on the main valve; When the closing part of the main valve is opened, it should also be opened accordingly.

(13)铸铁阀门强度试验时，应用铜锤轻敲阀体和阀盖，检查有否渗漏。

(13) When conducting strength tests on cast iron valves, a copper hammer should be used to lightly tap the valve body and cover to check for leaks.

(14)阀门进行试验时，除旋塞阀有规定允许密封面涂油外，其他阀门不允许在密封面上涂油试验。

(14) When conducting tests on valves, except for plug valves where oil is allowed on the sealing surface, other valves are not allowed to apply oil on the sealing surface for testing.

(15)阀门试压时，盲板对阀门的压紧力不宜过大，以免阀门产生变形，影响试验效果(铸铁阀门如果压得过紧，还会破损)。

(15) During valve pressure testing, the pressure of the blind plate on the valve should not be too large to avoid deformation and affect the test effect (if the cast iron valve is pressed too tightly, it may also be damaged).

(16)阀门试压完毕后，应及时排除阀内积水并擦干净，还应作好试验记录。

(16) After the pressure test of the valve is completed, the accumulated water inside the valve should be promptly drained and wiped clean, and test records should be kept.