Where should the water seal ring be placed when repacking a centrifugal pump?

The water seal ring plays a crucial role in the operation of a centrifugal pump, specifically in preventing leakage and maintaining proper pressure within the stuffing box. When repacking a centrifugal pump, placing the water seal ring so that it lines up with the water seal pipe hole in the stuffing box is essential for optimal performance. This alignment allows for effective water flow from the seal pipe, which helps in cooling and lubricating the seal, thereby preventing overheating and eventual failure.

Proper placement ensures that the water seal can perform its intended function, preventing the entry of air and maintaining the hydraulic balance needed for efficient pump operation. Any misalignment would compromise the functionality of the water seal, potentially leading to increased wear, leaks, and decreased efficiency in the pump’s operation.