How many feet should negative suction head not exceed to prevent potential issues?

The recommended maximum for negative suction head in water treatment processes is generally regarded as 20 feet. This limitation is crucial to prevent cavitation, which can occur if the pressure at the pump inlet drops too low. Cavitation can lead to the formation of vapor bubbles in the fluid, which then collapse violently, causing potential damage to the pump and reducing its efficiency.

Maintaining negative suction head within safe limits ensures stable pump operation, prolongs equipment lifespan, and maintains system efficiency. If the negative suction head exceeds 20 feet, the risk of cavitation increases significantly, potentially resulting in operational disruptions and costly repairs. Therefore, it is essential for operators to monitor and manage suction conditions closely, adhering to established guidelines to safeguard the equipment and overall system integrity.