Purpose:

The Nagle Priming Inductor offers a unique positive pressure method for the priming of centrifugal pumps which are located above the liquid level. This device can be used on any application including abrasive and corrosive and for priming pumps of any manufacture.

Operation:

The Priming Inductor is a fluid driven jet pump which has been specially adapted for use on the entrance to a pump suction pipe. The inductor primes the pump by injecting an externally pressurized jet of fluid (usually service water) through the entrance throat of the inductor body to fill the suction pipe and pump with fluid after which pumping can be initiated.

Benefits:

• Positive, fast and certain priming every time.
• Unaffected by air or fluid leaks in the system.
• Priming is complete in just a few seconds.
• Easily automated start up sequence.
• Primes even if suction is buried in packed solids.
• Augments feed of high density slugs of solids.
• Avoids priming problems with aerated sump fluids.
• Specially designed for abrasive applications.
• No moving parts.
• Prevents premature loss of prime due to fluid aeration,
  solids slugs of high lifts when used with a pressure
  sensor in the discharge line to reactivate the
  inductor service water.