To extend the life of valve packing, what should be done?

Lubricating the valve stem with oil is essential for extending the life of valve packing. Proper lubrication reduces friction between the valve stem and the packing material, minimizing wear and tear. This not only allows the valve to operate more smoothly but also helps prevent potential issues such as leaks that can develop over time due to the degradation of packing material caused by friction. In addition, lubrication can create a protective barrier against corrosion, which can further extend the lifespan of both the valve and its components. Regular maintenance, including lubrication, is critical for optimizing the performance and durability of valves in refrigeration systems.