Stable and Unstable Centrifugal Pumps

Sponsored Links

For stable head-flow characteristics the differential head - h - progressively falls with increasing flow rate - q.

For unstable head-flow characteristics the differential head - h - rises to a maximum and then progressively falls with increasing flow rate - q.

An unstable pump may start to oscillate between the two possible combinations of head-flow. The flow rate will modulate and the pipeline vibrate.

It is recommended that centrifugal pumps are designed and operated under stable conditions.

Sponsored Links

Related Topics

• Pumps - Piping systems and pumps - centrifugal pumps, displacement pumps - cavitation, viscosity, head and pressure, power consumption and more

Related Documents

• Alternating Pumps - Secure the system and achieve equal wear by alternate pumps in parallel
• Centrifugal Pumps - An introduction to Centrifugal Pumps
• Centrifugal Pumps - Minimum Flow - Centrifugal pumps and minimum continuous flow
• Centrifugal Pumps and Standards - Centrifugal pumps design and dimensions standards
• Classifications of Pumps - Selecting between Centrifugal Pumps and Positive Displacement Pumps
• Converting Pump Head to Pressure - Converting head (ft or m) to pressure (psi or bar, kg/cm²) and vice versa
• Specific Speed - Pumps - Specific speed may be determined independent of the pump size