Pump Priming Ejectors | Priming Eductor | Centrifugal Pump Priming
The suction line of a Centrifugal Pump needs to run full of liquid for the pump to start with the pumping.
This creates a problem when there’s a positive height difference between the Pump Suction level and Sump liquid level. This height difference is known as Suction lift.
Hence the liquid needs to be drawn upto the pump level to ensure pumping start-up. The process of ensuring liquid presence in the suction line of the pump is known as Priming. The Priming process is a compulsory part of pump operation.
Improper priming results into formation of gas pockets in the pump impeller which prevent liquid flow.
Running the pump with improper priming leads to overheating of the motor and mechanical damage to the pump.
Ejectors for Pump Priming:
Ejector / Eductor operate by creating a vacuum inside the suction line of the pump. The vacuum draws the liquids from sump upto the pump elevation.
Ejector / Eductor require a Compressed Air Supply as an Energy input. Easy availability of Compressed air and minimal flow requirement allows the Ejector / Eductor to be easily accommodated by the existing facility.
Unlike other priming arrangements such as Foot Valves, Priming Tanks; Ejector / Eductor do not require any auxiliary liquid pump for its working.
Ejector / Eductor are also superior to Vacuum Pump Technology for Priming due to the following reasons:
Crystal TCS’s Priming Ejector / Eductor:
Designing a Priming Ejector / Eductor is largely a function of the involved pumping system.
Our Engineers after carefully assessing the requirements of associated Pumping Systems have developed a specific set of rules for Priming Ejector / Eductor in order to achieve consistent Priming within minimum time with minimal Motive Consumption.
We also provide automated control to start and stop the ejector/eductor automatically during the pump start-up process.
Salient Features of our Pump Priming Ejectors :
A wide range of models to choose from, enables achieving optimum priming time.
Can easily provide Suction Lifts upto 9m for water pumps.
Can operate with Compressed Air pressures as less as 3 Bar(g).
Rugged construction and compact size enable installation in difficult to access areas.
We manufacture Ejector / Eductor in a wide variety of materials (Carbon Steel, Stainless Steel and FRP) to suit the pumping liquid’s corrosive effects.
Easily tolerate Liquid ingestion.
Reliable and Maintenance free operation.
Priming for Centrifugal Pumps with large size Suction lines (4” and more).
Priming for Seawater Pumps.
Priming for Corrosive Liquid Pumping.