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A vacuum pump priming system automatically removes air from centrifugal pump casings and suction lines, allowing pumps to fill with liquid before startup. It prevents dry running, reduces manual intervention, improves reliability and ensures dependable operation in municipal water, wastewater and industrial pumping stations.
CompreVac Inc. supplies engineered vacuum pump priming systems for centrifugal pumps used in municipal water, wastewater, sewage, stormwater and industrial pumping applications.
Request a Pump Priming AssessmentA vacuum pump priming system removes air from a centrifugal pump casing and suction line so that liquid can rise through the suction piping and fill the pump before startup.
Centrifugal pumps are designed to move liquid rather than air. If a pump is not properly primed, it may fail to produce flow, run dry, cavitate, overheat or suffer damage to seals and other components.
The vacuum priming system is connected to the centrifugal pump casing or suction piping. When priming is required, the vacuum pump removes trapped air from the pump and suction line.
As the air is evacuated, atmospheric pressure pushes liquid upward through the suction pipe. Once the pump casing is filled and the required vacuum level is reached, the centrifugal pump is ready to start and produce flow.
The vacuum pump evacuates air from the pump casing and suction piping.
The reduction in pressure allows liquid to rise through the suction line.
Vacuum controls confirm that the pump is filled and ready to operate.
Produces the vacuum required to remove air from the centrifugal pump and suction piping.
Separates entrained liquid from the evacuated air and protects the vacuum pump.
Helps stop liquid from entering the vacuum pump when the separator fills.
Monitor vacuum levels and automatically initiate or stop the priming cycle.
Provides automatic sequencing, alarms and integration with pump station controls.
Provides stored vacuum capacity where rapid or repeated priming is required.
Automatic vacuum priming systems are commonly used where centrifugal pumps are positioned above the liquid level or must operate without manual priming.
One vacuum pump provides priming capacity where standby equipment is not required.
Two vacuum pumps provide duty and standby operation or automatic lead-lag sequencing.
Three vacuum pumps provide additional capacity and redundancy for critical pumping stations.
A vacuum priming system must be sized for the actual pump station and suction piping. Important design information includes:
The theoretical maximum suction lift for water at sea level is approximately 10.3m or 33.9ft. Practical suction lift is lower because of elevation, water temperature, vapour pressure, piping losses and air leakage.
Contact CompreVac with your pump size, suction-pipe dimensions, suction lift and required priming time. Our team can help determine the appropriate vacuum priming system for your application.
Contact CompreVacCompreVac has been providing air compressors, blowers and vacuum pump equipment, repair and service since 1975.
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