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Liquid Ring Pump

Self-priming Liquid Ring Pump

FZX Self-Priming Liquid Ring Pump

This sanitary liquid ring pump provides new capabilities for handling products with entrained air.

By using a specially designed impeller and housing, the FZX maintains its prime when other pumps become air bound. This feature makes the FZX more efficient for complete evacuation of tanks and lines during normal process or CIP.


  • CIP return
  • Pumping aerated products
  • Complete emptying of tanks (tanker unloading)
  • Lifting products from drums and sumps
  • Texturizing sour cream (replacing homogenizer valves)
  • Pumping shear sensitive products (e.g. cream, liquid eggs, yeast, and sour cream)

With its specially designed impeller and housing, the FZX Series maintains its prime when other pumps become air-bound. This feature, combined with its ability to produce a vacuum, makes it an excellent CIP return pump as complete removal of fluids is required.

Replaces Centrifugal Pump/Air Eliminator Combinations
Because the FZX can pump CIP solution containing air, it replaces centrifugal pumps and the need for air eliminators and check valves on the discharge. With the FZX, processors no longer have to deal with caustic cleaning solution being discharged onto the floor.

Reduces Water and Chemical Usage
The FZX pump requires less fluid to charge a system. It also reduces residual water and CIP solution left in lines and vessels and decreases soiling of wash water through better evacuation of pre-rinse.

Replaces Multiple CIP Pumps
A single FZX pump can handle the CIP return of multiple tanks, eliminating the need for one CIP pump per tank.

Turbine Impeller

The turbine style impeller creates chambers of liquid/gas while channels in the cover and housing displace the liquid/gas.

FZX Model Specifications

Max Discharge Pressure

100 psi (7 bar)

Max Flow Rate

400 gpm (90 m3/hr)

Max Viscosity

5,000 cps

Other Features



FZX Maintenance Video

“We have found the Fristam pumps to be very reliable with excellent seal life. This pump paid for itself in less than four months”

—Midwest Food Processor

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