How should pump packing be adjusted?

Tightening pump packing down to a drip is the recommended method for ensuring proper sealing while maintaining the functionality of the pump. When adjusting pump packing this way, the goal is to create a balance where the packing material is sufficiently tight to prevent leaks, but not so tight that it causes excessive wear or overheating of the pump shaft. A small drip of fluid is often acceptable, as it indicates that the packing is not overly compressed and is functioning as intended.

Leaving packing loose for flexibility may lead to significant leakage, potential loss of efficiency, and even operational hazards. Conversely, completely removing the packing would eliminate the sealing mechanism, resulting in leaks that could compromise the system. Tightening the packing until it is fully closed could severely damage the shaft and packing material due to excessive friction and heat generation. Thus, the correct practice of adjusting pump packing to a dripping point ensures effective sealing while minimizing wear and maintaining pump performance.