Control valve failure analysis

Control valve during normal operation in a variety of failures, from the implementing agencies, regulatory agencies or connected accessories
Devices. Failure analysis is used to determine the fault location and treatment programs.high temperature solenoid valve
Failure analysis of the implementing agencies
Caused by the failure of filler
Performance caused by the failure due to filler as leakage increases, friction increases and stem beating. The analysis is as follows.
A filler material is inappropriate. As the filler material failure caused by improper outside leakage increases and increased friction in high temperature applications, for example, PTFE packing. The Troubleshooting method is to replace the packing.
Packing structure is poorly designed. o filler cavity, the location of the filler and accessories inappropriate filler highly inappropriate troubleshooting methods require the installation of the product documentation fillers and accessories.
3 filler improper installation. For example, graphite packing spiral installation caused by the filler uneven compaction force, the center is not aligned. Troubleshooting layer installation, uniform pressing force.
4 packing debris. Debris caused by the stem of the filler within the designated track. Troubleshooting filler be cleaned to remove debris
5 on the valve cover is improperly installed. On the valve cover improper installation of the filler discontinuity. The Troubleshooting method is to reinstall the valve cover gasket on the valve cover fastening bolts evenly diagonally pressing.pneumatic hand valve