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Type F 550 GS with commutator motor Type F460 Ex

Features and benefits:

  • recommended for low to medium viscosity products, up to max. 30.000 mPas (cP)
  • lightweight and easy-to-handle eccentric worm-drive pump with planetary gear
  • with mechanical seal or stuffing box
  • low wear due to low pump speed
  • low weight of complete pump and motor unit
  • outer diameter of pump tube 50 or 54 mm
  • Type F 550 GSX.-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.

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)

The picture shows:

  • Eccentric worm-drive pump Type F 550 GS-54/26 with commutator motor Type F 460 Ex

Performance data


  • Delivery rate max. 50 l/min
  • Delivery head max. 8 bar
  • Viscosity max. 30.000 mPas (cP)
  • The delivery rate depends on the viscosity and flowability of the fluid.