原文：
对阀门的维护，可分两种情况；一种是保管维护，另一种是使用维护。 一、保管维护 保管维护的目的，是不让阀门在保管中损坏，或降低质量。而实际上，保管不当是阀门损坏的重要原因之一。 阀门保管，应该井井有条，小阀门放在货架上，大阀门可在库房地面上整齐排列，不能乱堆乱垛，不要让法兰连接面接触地面。这不仅为了美观，主要是保护阀门不致碰坏。 由于保管和搬运不当，手轮打碎，阀杆碰歪，手轮与阀杆的固定螺母松脱丢失等等，这些不必要的损失，应该避免。 对短期内暂不使用的阀门，应取出石棉填料，以免产生电化学腐蚀，损坏阀杆。 对刚进库的阀门，要进行检查，如在运输过程中进了雨水或污物，要擦试干净，再予存放。 阀门进出口要用蜡纸或塑料片封住，以防进去脏东西。 对能在大气中生锈的阀门加工面要涂防锈油，加以保护。 放置室外的阀门，必须盖上油毡或苫布之类防雨、防尘物品。存放阀门的仓库要保持清洁干燥。 二、使用维护 使用维护的目的，在于延长阀门寿命和保证启闭可靠。 阀杆螺纹，经常与阀杆螺母摩擦，要涂一点黄干油、二硫化钼或石墨粉，起润滑作用。 不经常启闭的阀门，也要定期转动手轮，对阀杆螺纹添加润滑剂，以防咬住。 室外阀门，要对阀杆加保护套，以防雨、雪、尘土锈污。 如阀门系机械待动，要按时对变速箱添加润滑油。 要经常保持阀门的清洁。 要经常检查并保持阀门另部件完整性。如手轮的固定螺母脱落，要配齐、不能凑合使用，否则会磨园阀杆上部的四方，逐渐失去配合可靠性，乃至不能开动。 不要依靠阀门支持其它重物，不要在阀门上站立。 阀杆，特别是螺纹部分，要经常擦拭，对已经被尘土弄脏的润滑剂要换成新的，因为尘土中含有硬杂物，容易磨损螺纹和阀杆表面，影响使用寿命。

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译文：
Maintenance on the valve can be divided into two cases; one is to maintain custody, the other is used to maintain. 1, and preservation The purpose of maintaining custody, is to keep the valve in the custody of the damage, or lower quality. In fact, improper storage is a major reason for valve damage. Valve custody, should be well-organized, small valve on the shelves, large valves can be neatly arranged on the ground in the public coffers, not heaps random pile, do not let flange face contact with the ground. This is not only for beauty, mainly to protect the valve will not break something. As the storage and handling properly, hand wheel broken, crooked stem touch the hand wheel nut loose with a fixed stem and loss, these unnecessary losses, should be avoided. Time being on the short-term use of the valve, should remove the asbestos packing, in order to avoid electrochemical corrosion, damage to the valve stem. First entered the library of the valve, to conduct inspections, such as during transport into the water or dirt to smear a clean, re-deposited. Valve export to use wax paper or plastic sheet sealed to prevent dirt inside. In the atmosphere on the rusty surface to be coated rust-proof valve processing oil, to protect them. Placed outside the valve, must be covered with linoleum or Tarpaulins like rain, dust-proof materials. Warehouse storage valve to keep dry and clean. 2, Maintenance Maintenance of the aim is to extend valve life and ensure reliable opening and closing. Stem threads, often with the stem nut friction, to a little yellow dry coating oil, molybdenum disulfide or graphite, a lubricant. Do not often open and close the valve, but also on a regular basis handwheel on stem threads to add lubricant to prevent biting. Outdoor valve, to increase the protection sleeve on the stem, to rain, snow, dust, rust and pollution. If mechanical valve system to be fixed, to add time to the gearbox oil. To keep valves clean. To regularly check and maintain the integrity of the valve the other components. If a fixed hand wheel nut fell off, to be filled and can not make do use, otherwise they will grind the valve stem upper garden square, gradually lost with the reliability, and even can not start. Do not rely on the valve support other heavy objects, do not stand in the valve. Stem, especially the threaded part, to regular cleaning, dust that have been soiled should be replaced with a new lubricant, because the dust contains hard debris, easy to wear thread and stem surface, affect the service life.