Multiflow Series - TDE Series


  • The Multiflow TDE 500 to 710 range consist of fully cased, cylindrical models with circular mounting flanges at both ends and a wired terminal box.
  • Mixed flow non-stall airflow properties and a non-overloading absorbed power curve allow a wide range of operating performance.
  • The Multiflow TDE mixed flow fans can typically provide 25% more performance than many conventional fixed blade fans or 25% less space for the same performance.
  • Multiflow, mixed flow performance can provide clear benefits over centrifugal and axial fans.


  • The guide vanes support the drive motor and provide enhanced airflow performance.
  • Galvanised steel housing with modern flange connections
  • Multiflow’s unique, adjustable blade angle mixed flow impeller.


  • Electricity supply - Single phase motors suitable for 220 or 240V and 3-phase motors suitable for 380 to415V.
  • Single phase variable speed controllable motors with high resistance rotors are available.
  • The use of stepped transformers or inverter speed control is also recommended.
  • Specification - Output to BS 5000 Part 10, performance to BS 4999 Part 101 and IEC 34-1, dimensions to BS 4999 Part 141 and IEC 72


  • Air flow tests to ISO 5801:1997 (incorporating BS 848 Part 1,1997)
  • Noise data tests to BS 848 Part 2,1985 (Inlet and Outlet sides)

  Special Features

  • The required performance can be achieved from a smaller fan size due to the airstream leaving a Multiflow TDE impeller being more axially orientated.
  • The casing can then be closer to the impeller periphery, without incurring losses and retaining excellent air performance, power and sound levels.
  • The smaller fan size can be used in confined spaces.
  • Also, the relatively wide air passage design of the impeller results in greater air movement.

Pressure Values

  • Achieved static pressure is the more commonly used pressure for fans of this type which the accompanying performance curves show.
  • Should the fan total pressure be required, use the formula:


          Casing Impeller  
Model TDE A B C D dia. mm dia. mm r.p.m.
500 500 585 400 21 500 400 1440 & 960
560 560 645 400 21 560 450
630 630 715 500 21 630 500
710 710 795 500 21 710 560



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The Multiflow TDE 500 to 710 range consist of fully cased, cylindrical models with circular mounting flanges at both ends and a wired terminal box.


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