Treatment Method and Maintenance Method of Leakage at Valve Packing
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- The material and type of filler should be selected according to the working conditions;
- Install the packing correctly according to the relevant regulations, the packing should be placed and compressed one by one, and the joint should be 30℃ or 45℃;
- Packings that have been used for a long period of time, aging, or damage should be replaced in time;
- The valve stem should be straightened and repaired after it is bent or worn, and the damaged ones should be replaced in time;
- The packing should be installed according to the specified number of turns, the gland should be tightened symmetrically and evenly, and the compression sleeve should have a pre-tightening gap of more than 5mm;
- Damaged glands, bolts and other parts should be repaired or replaced in time;
- The operating procedures should be followed, except for the impact handwheel, operate at a constant speed and normal force;
- The gland bolts should be tightened evenly and symmetrically. If the gap between the gland and the valve stem is too small, the gap should be appropriately increased: the gap between the gland and the valve stem is too large and should be replaced.
