What is Pump Recycle Control?
Pump Recycle Control, also known as pump re-circulation flow control, is one of the most common applications found within the Liquid Pipeline industry. Pump Recycle Control keeps pumps operating at a point on their curve. This preventative measure prevents over-pressure of downstream piping and components. The loop directly controls pressure and (by the nature of the system hydraulics) flow rate.
When selecting control valves for this application, it’s important to understand cavitation and consider designs that will limit it. Globe valve designs are generally preferred for pump recycle control due to their higher cavitation coefficient. Response times should be moderately fast.