What problems are easy to encounter in the early installation of solenoid valves?

1. Incomplete cleaning, careless operation and abuse of tools. It is manifested in that the valve stem, pressure benefit, and environmental material surface do not need to be cleaned with oil, and even there are residual fillers in the box; the operation is not in order, the filler is used indiscriminately, and it is placed anywhere, so that the filler is stained with mud and sand; no special tools are used, and the cuttings are used. Packing, install packing with a screwdriver, etc. This greatly reduces the packing installation quality.
2. Improper selection of fillers, replace high with low and wide with narrow. Use general low pressure packing in high temperature and strong corrosive medium.
3. The packing has wrong angles, the length is different, and it is installed in a closed material, not flat and tight.
4. Multi-layer environment release, multi-layer winding and packing, compact at one time. The packing in the stuffing box is uneven and there are gaps. After being compressed, the outside is tight and the inside is loose, which increases the leakage of the packing.
5. Packing is installed too much, so that the pressure benefit is on the stuffing box, and the pressure is easy to cause bit tax to scratch the valve stem.
6. Because the pre-tightening gap between the pressure gain and the environment material is too small, the packing leaks during use, and the gland cannot be tightened.
7. The pressure gain is too tight on the city material pressure, which increases the wear of the valve stem and increases the opening and closing force of the Min stem.
8. The gland is skewed and not tight.
9. The valve stem and the pressure gain gap are too small, friction with each other, and wear the valve stem.
10. O-shaped diagram installation is prone to defects such as distortion, scratches, and deformation.