The truck mixer pump TWINSTAR 4Z33 has the longest boom of the range in 4 sections with "Z" folding type and pipeline Ø 112.5 mm. The TWINSTAR 4Z33 is suitable for urban construction sites with difficult access thanks to the stabilization front and rear "telescopic outriggers" type. 
Perfect assembly on truck 4 axles with wheelbase 4.200 - 4.500 mm
Drum high load capacity with elliptical bottom with nominal capacity 8 m³
The pumping group S6 designed to optimize the best relation among suction and concrete pumping that realize max theoretical concrete output over 70 m³/h and pressure on concrete adapted to the performance.


Main features

  • Pump made by high-yield tensile strength steel, FEM designed.
  • Excellent assembly on 4 axles chassis.
  • Front outriggers "horizontal" opening; rear outriggers "horizontal" opening. Separated operation controls on both side of the equipment. Position held by hydraulic check valves.
  • Drum high load capacity with elliptical bottom with geometrical volume 12 m³.
  • Boom with 4 sections, "Z" folding type with pipeline Ø 112.5 mm (4"½).
  • Boom control by proportional distributor.
  • Minimum opening height 7.400 mm.
  • Valve S6 at high performances till 73 m³/h. continuous, silent, regular pumping.
  • Concrete capacity adjuster at distance.

Standard dotation

  • Proportional radio remote control provided with double speed in boom moving, automatic free frequency research, manipulators with 8 positions and delivery capacity converter.
  • Membrane water pump 230 l/min, 13 bar.
  • Electric vibrator on hopper grid and push-button control panel at distance.
  • Plates for outrigger support and housing with safety lock.
  • Light projector on hopper.
  • Tool kit for cleaning and maintenance.


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Specifications subject to change without prior notice, no responsibility is taken for the correctness of this information.