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Type F 550 S with three-phase motor

Features and benefits:

  • recommended for low to high viscosity, pasty, but still free flowing products
  • eccentric worm-drive pump with bearing flange in aluminium
  • with mechanical seal or stuffing box
  • low wear due to low pump speed
  • vertical and horizontal use
  • outer diameter of pump tube 50 or 54 mm
  • Type F 550 SX.-50/21 for use in Zone 0, tested and certified according to ATEX-Directive 94/9/EC, EC-Type-Examination Certificate No. PTB 99 ATEX 4050/4051 X

Positive displacement pump - eccentric worm type:

  • smooth pumping with very little turbulences
  • low wear, no valves, vanes etc.
  • vertical and horizontal use

The pump is available in:

  • Pump: stainless steel 316 L / 316 Ti (S)
  • Stator: PTFE, NBR, CSM, FKM

Immersion lengths:

  • 700, 1000 and 1200 mm (other lengths on request)

Available drive motors:

  • Three-phase motor 0,75 or 1,1kW, 930 or 700 min-1
    jet-proof to IP 55 or explosion-proof to ATEX
  • Air motor 0,5 - 1,8 kW, 1000 min-1 at 6 bar,
    explosion-proof to ATEX

The picture shows:

  • Eccentric worm-drive pump Type F 550 S-50/21 with three-phase motor

Performance data


  • Delivery rate max. 50 l/min
  • Delivery head max. 8 bar
  • Viscosity: pasty
  • The delivery rate depends on the viscosity and flowability of the fluid.
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Tomlinson Hall is delighted to be a distribution partner for FLUX, a leader in its field, and a developer of barrel pump technology for more than 60 years. Its dedication to research and development and product evolution reflects Tomlinson Hall’s own commitment to offering the very best pump products to our customers.

FLUX, along with DEPA and ELRO, is part of a strong contingent of German pump brands in our product portfolio, and we are proud to support the German pump industry.

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