Elevated negative pressure on the intake side of a pump can precipitate several detrimental effects. When the pressure drops excessively, the liquid being pumped is more susceptible to cavitation, a phenomenon where vapor bubbles form and collapse rapidly. This implosion process generates noise, vibration, and can cause significant erosion damage to the pump impeller and casing. The severity of these effects increases with the degree of pressure reduction and the duration of exposure.
Maintaining adequate suction pressure is critical for the efficient and reliable operation of pumping systems. Historically, insufficient net positive suction head available (NPSHa), a direct consequence of low suction pressure, has been a major contributor to pump failures across various industries. Addressing this issue through proper system design, regular monitoring, and preventative maintenance significantly extends pump lifespan, reduces downtime, and minimizes operational costs.
