F 550 S

Progressive cavity drum and IBC pumps suitable for liquids from 1 to 80,000 mPas

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F 550 S is known as a progressive cavity or eccentric worm drive pump, best suited to handling medium to high viscosity liquids up to 80,000 mPas. The pump develops a smooth flow at a constant pressure, offering low shear, pulsation-free liquid transfer. The pump is portable, but can also be used in fixed installations. Very easy to disassemble for maintenance and cleaning, with few moving components.  F 550 S can handle hard and soft solid particles up to 8 mm in diameter.  Fitted with bearing flange, it requires FLUX direct drive three-phase electric or FPM type compressed air motor.

  • Application areas: Atex  

Technical data:

  • Flow rate: max. 50 l/min1
  • Flow pressure: max. 8 bar1
  • Delivery head: max. 80 mwc1
  • Viscosity: min. 1 mPas - max. 80000 mPas1
  • Outer tube diameter: min. 50 mm - max. 54 mm2
  • Immersion length: 700, 1000, 1200
  • Materials outer tube: Stainless steel
  • Media / Fluids: Highly flammable media, Petroleum products, Solvents, Viscous media
  • Seal: open mechanical seal
  • Container: 1000 l IBC, 200 l drums, Tanks > 1000 liters
  • 1 dependent on pump model, motor and medium
  • 2 dependent on pump model

Product attributes

  • Positive displacement pump with body in stainless steel 316 L
  • Direct drive motor connection via alloy bearing flange
  • Can be used for emptying closed top drums and IBC's
  • Shear sensitive pumping action
  • Suitable for continuous operation
  • Can be used with variable or fixed speed motors
  • Easy to disassemble for cleaning and maintenance
  • Fitted with open mechanical seal
  • Torsion shaft and high torque cardan shaft options in stainless steel
  • Eccentric worm in stainless steel, hardened versions available
  • Stators availkable in NBR black / white, FKM and PTFE
  • NEW: FLUX FOOD Eccentric worm-drive pump F 550  TR and F 560 TR with clamp type bearing flange


  • Wide viscosity range
  • Smooth pumping of thick, shear-sensitive and barely flowing liquids
  • Handles sensitive products with hard and soft solids up to 8 mm diameter
  • Optimal for high viscosity self-flowing liquids
  • Also suitable for shear-sensitive liquids
  • Transfer at constant pressure
  • Variable flow rate depending on motor selected
  • Easy to disassemble for cleaning
  • High efficiency
  • ATEX certified versions available