What is the purpose of a lantern ring in pump systems?

A lantern ring serves a critical function in pump systems, specifically in managing the sealing and containment of fluids within the pump assembly. Its primary purpose is to prevent air and fluid leakage along the pump shaft, ensuring that the fluid being pumped does not escape into the atmosphere and that external air does not enter the pump.

The lantern ring is typically installed in the stuffing box of the pump and is designed to maintain a seal around the shaft while allowing for a controlled amount of lubrication or sealing liquid to flow, which aids in reducing friction and wear. This is particularly important in maintaining the performance and longevity of the pump, as leaks can lead to reduced efficiency and increased wear on pump components.

In contrast, enhancing pump efficiency, monitoring pump temperature, and increasing water flow rate are not direct functions of the lantern ring. While maintaining a good seal indirectly contributes to overall efficiency by preventing leaks, it is not the primary design purpose of the lantern ring.