As a sealing material, braided packing is prone to aging and loss during use. So how should we maintain it? You can look at the following eight ways:
1. The material and type of braided packing should be selected according to the working conditions;
2. According to the relevant regulations, the packing should be installed correctly, the packing should be placed and compressed one by one, and the joint should be 30℃ or 45℃;
3. The packing that has been used for too long, aged and damaged should be replaced in time;
4. If the valve stem is bent and worn, it should be straightened and repaired, and if the damage is serious, it should be replaced in time;
5. The packing should be installed according to the specified number of turns, the gland nut should be tightened symmetrically and evenly, and the pressure sleeve should have a pre-tightening clearance of more than 5mm;
6. Broken glands, bolts and other components should be repaired or replaced in time;
7. The operating procedures should be followed, except for the impact handwheel, and operate at a constant speed and normal force;
8. 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; and if the gap between the gland and the valve stem is too large, it should be replaced.
