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Gate valve installation and maintenance of the Notes
Gate valve installation and maintenance should note the following: 1, hand wheel, handle and transmission are not allowed to lift, and no collision. 2, double gate valve should be mounted vertically (ie stem in a vertical position, the hand wheel at the top). 3, with bypass valve gate valve should be opened before opening the bypass valve (to balance the pressure difference between import and export and reduce the opening force). 4, with the gear valve, according to the instructions of the product installation instructions. 5, if the valve is often used switch, lubrication at least once a month.