美标阀门注意事项

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原文：
注意：　　●球阀在关闭状态下，阀体内部依旧存在受压流体　　●维修前，解除管线压力并使阀门处于打开位置　　●维修前，断开电源或气源　　●维修前，将执行机构与支架脱离　　●必须先查明球阀上、下游管道确已卸除压力后，才能进行拆卸分解操作　　●分解及再装配时必须小心防止损伤零件的密封面，特别是非金属零件，取出O 型圈时宜使用专用工具　　●装配时法兰上的螺栓必须对称、逐步、均匀地拧紧　　●清洗剂应与球阀中的橡胶件、塑料件、金属件及工作介质（例如燃气）等均相容。工作介质为燃气时，可用汽油(GB484-89)清洗金属零件。非金属零件用纯净水或酒精清洗　　●分解下来的单个零件可以用浸洗方式清洗。尚留有未分解下来的非金属件的金属件可采用干净的细洁的浸渍有清洗剂的绸布（为避免纤维脱落粘附在零件上）擦洗。清洗时须去除一切粘附在壁面上的油脂、污垢、积胶、灰尘等　　●非金属零件清洗后应立即从清洗剂中取出，不得长时间浸泡　　●清洗后需待被洗壁面清洗剂挥发后（可用未浸清洗剂的绸布擦）进行装配，但不得长时间搁置，否则会生锈、被灰尘污染　　●新零件在装配前也需清洗干净　　●使用润滑脂润滑。润滑脂应与球阀金属材料、橡胶件、塑料件及工作介质均相容。工作介质为燃气时，可用例如特221 润滑脂。在密封件安装槽的表面上涂一薄层润滑脂，在橡胶密封件上涂一薄层润滑脂，阀杆的密封面及摩擦面上涂一薄层润滑脂　　●装配时应不允许有金属碎屑、纤维、油脂（规定使用的除外）灰尘及其它杂质、异物等污染、粘附或停留在零件表面上或进入内腔

“ Valve American Standard Precautions”是由中国球阀网提供的阀门行业新闻，译文仅供参考。另外，中国球阀网还提供相关产品搜索：气动管路球阀（仪表球阀）、 PP-R球阀、铜球阀、广式（西德式）球阀、陶瓷球阀等。

译文：
Valve American Standard Precautions Note: ● ball valve in the closed state, there is still pressure on the fluid within the valve body ● maintenance of the former, and to relieve line pressure valve in the open position ● maintenance, disconnect the power or gas supply ● repairs before the bracket from the actuator and ● must first identify the valve on the downstream pipeline pressure has indeed dropped only after the removal operation decomposition ● decomposition and re-assembly must be careful to prevent damage to parts of the sealing surface, in particular, non-metallic parts, remove the O-rings use special tools when appropriate ● bolts on the flange assembly must be symmetrical, gradually, evenly tighten ● cleaning agent should be in a rubber ball, plastic parts, metal parts and the working fluid (eg gas) and others compatible. Working medium for the gas, the available gasoline (GB484-89) to clean metal parts. Non-metal parts cleaning with pure water or alcohol ● break down the individual parts can be cleaned using immersion method. Yet not break down the left non-metallic parts can be used to clean metal parts of fine clean silk impregnated with cleaning agents (to prevent adhesion of fiber loss on the part) scrub. Cleaning must remove all the adhesive on the wall of the grease, dirt, rubber product, dust, etc. ● non-metallic parts should be cleaned immediately removed from the cleaning agent, not a long soak ● After cleaning the wall needed to be washed after volatile cleaning agent (detergent can not dip the silk rub) for assembly, but not for a long time on hold, otherwise it will rust, the dust pollution ● the new parts before assembly can be cleaned ● use of grease lubrication. Grease should be metal with ball valve, rubber parts, plastic parts and the working medium are compatible. Working medium for the gas, the 221 can be used such as special grease. Installed in the seal groove on the surface coated with a thin layer of grease on the rubber seals coated with a thin layer of grease, valve stem sealing surface and surface coated with a thin layer of grease friction ● Assembly should not allow metal debris, fiber, oils (except for the requirement to use) dust and other impurities, foreign matter contamination, adhesion, or stay on the surface or in part into the cavity

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原文来源：http://www.1qiufa.com/

2011-12-29 05:58