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Precautions for valve installation
1. The valve body material is mostly made of cast iron, brittle, so it can not be hit by heavy objects.
2. When handling the valve, it is not allowed to throw it; When lifting and hoisting the valve, the rope should be tied to the valve body, strictly prohibited to be tied to the handwheel, valve stem and flange bolt hole.
3. The valve should be installed in the most convenient place for operation, maintenance and overhaul, and is strictly prohibited to be buried underground. The valve on the pipeline directly buried and in the trench shall be equipped with an inspection well chamber to facilitate the opening and closing and adjustment of the valve.
4. Ensure that the thread is intact, and wrap hemp, lead oil or ptfe raw tape on the thread. When turning the thread, use a wrench to jam the hexagonal valve body screwed into one end of the pipe.
5. When installing flanged valves, pay attention to tighten the connecting bolts along the diagonal direction, and exert even force when twisting to prevent gaskets from running off or causing deformation and damage to the valve body.
6. The valve should be kept closed during installation. For threaded valves close to the wall, installation often requires removing the stem disc and handwheel to turn. In disassembly should be in the hand wheel to keep the valve open state, and then disassembly.
China Valve Media/Email：prcvalve@163.com
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