船用閥門作為船舶流體控制的關鍵部件，其性能直接關系航行安全與系統穩定。一系列嚴格測試標準，從材料、壓力、操作等維度，確保閥門能在復雜海洋環境中可靠運行。

　　As a key component of ship fluid control, the performance of marine valves directly affects navigation safety and system stability. A series of strict testing standards ensure that valves can operate reliably in complex marine environments from dimensions such as materials, pressure, and operation.

　　材料性能測試是質量根基。海洋高鹽霧、高濕度環境對閥門材料要求嚴苛。金屬材質需進行化學成分分析，保證合金元素達標，同時通過鹽霧試驗，將試件置于鹽霧箱中持續數十小時，觀察表面是否銹蝕。非金屬材料則要經過高溫、紫外線等老化測試，防止密封件等部件因老化失效。

　　Material performance testing is the foundation of quality. The high salt spray and high humidity environment in the ocean have strict requirements for valve materials. The metal material needs to undergo chemical composition analysis to ensure that the alloy elements meet the standards. At the same time, the test piece should be placed in a salt spray box for several tens of hours through salt spray testing to observe whether the surface is corroded. Non metallic materials need to undergo aging tests such as high temperature and ultraviolet radiation to prevent sealing components from failing due to aging.

　　壓力與密封性能測試是核心指標。強度測試時，閥門需承受 1.5 倍額定壓力，持續 5 - 10 分鐘，檢查殼體是否變形泄漏。密封測試則模擬正常工況，在額定壓力下檢測關閉狀態的泄漏量，部分截斷閥要求近乎零泄漏，避免介質外泄引發事故。

　　Pressure and sealing performance testing are core indicators. During the strength test, the valve needs to withstand 1.5 times the rated pressure for 5-10 minutes, and check whether the shell is deformed or leaking. The sealing test simulates normal working conditions and detects the leakage in the closed state at rated pressure. Some cut-off valves require almost zero leakage to avoid accidents caused by medium leakage.

　　操作與耐久性測試驗證長期可靠性。手動閥門操作力矩需符合標準，電動、液動閥門要測試驅動響應。耐久性測試通過數千次啟閉循環，檢查密封面與傳動部件磨損，確保閥門在船舶服役期內穩定工作。

　　Operation and durability testing verify long-term reliability. The operating torque of manual valves should meet the standards, and the driving response of electric and hydraulic valves should be tested. The durability test passes thousands of opening and closing cycles to check the wear of the sealing surface and transmission components, ensuring the stable operation of the valve during the ship's service life.

　　功能與環境適應性測試考量實際應用。安全閥要校準起跳和回座壓力，止回閥需驗證單向流通；同時，閥門要經受高低溫、振動等模擬測試，確保在 - 40℃至 80℃極端溫度及船舶振動環境下正常運作。

　　Functional and environmental adaptability testing considers practical applications. The safety valve needs to calibrate the take-off and reseating pressure, and the check valve needs to verify one-way flow; At the same time, the valve must undergo simulation tests such as high and low temperatures, vibration, etc. to ensure normal operation in extreme temperatures ranging from -40 ℃ to 80 ℃ and ship vibration environments.

　　這些測試標準構成嚴密質量體系，保障船用閥門性能可靠，為船舶安全航行、系統穩定及船員安全筑牢防線。

　　These testing standards constitute a rigorous quality system, ensuring the reliable performance of marine valves and building a solid defense line for safe navigation, system stability, and crew safety of ships.

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