PROLAC SA SELF-PRIMING PUMP

Application

  • The Prolac SA pump is a centrifugal pump specially designed to pump liquids containing air or gas without losing its pumping power. It can be used in the food-processing, pharmaceutical and chemical industries.
  • It can also be used with wine, oil, syrups, volatile products such as alcohol, acetone and other solvents, or with products at temperatures close to boiling point.
  • However, the main use of this pump is for CIP return.

Operating principle

  • The Prolac SA pump is a self-priming pump which does not require the use of a vacuum pump or other devices such as a foot valve or additional piping.
  • The pump must be primed with liquid only once before starting-up. When it is operated, the pump suctions the air or gas present inside the suction pipe and mixes it with the fluid inside the pump casing. The centrifugal force drives the liquid-gas mixture to the higher part of the casing. Due to the large dimensions of the casing, the fluid looses the speed and the air is expelled through the drive pipe.
  • Thus, the air is eliminated along the suction pipe before the liquid reaches the pump casing and then the pump operates as normal centrifugal pump.
  • It is very important that the suctioned air can escape when running along the discharge pipe without being subject to any kind of counter-pressure.
  • Users are strongly advised not to reduce the hydraulic power of the pump by reducing the size of the impeller or reducing the speed of the motor by means of a frequency converter since this would affect the suction power of the pump.

Design and features

  • Welded casing manufactured in cold-formed plate.
  • Very robust stainless steel lantern.
  • Open investment cast impeller.
  • DIN connections.
  • Sanitary mechanical seal.
  • Check valve in the suction nozzle to avoid siphoning when the pump stops.

Materials

  • Parts in contact with the product – AISI 316L
  • Other parts – AISI 304
  • Gaskets EPDM according to – FDA 177.2600
  • Mechanical seal – St.St./C/EPDM
  • External surface finish – bright polish

 

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