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Wilo-Economy CO/T-1 Helix V | Wilo
Your advantages
Wilo-Economy CO/T-1 Helix V.../CE

Your advantages

  • Compact system, ready for connection, for all applications that require system separation
  • Heavy-duty system due to stainless steel high-pressure multistage centrifugal pumps of the Helix V series
  • Easily adjustable and operationally reliable thanks to the EC switchgear
Series description
Wilo-CO/T-1 Helix V.../EC


Water-supply unit with system separation and a non-self-priming high-pressure multistage centrifugal pump


  • Fully automatic water supply including break tank for indirect connection to the public water supply network
  • Pumping of drinking water and process water, cooling water, fire water (apart from fire-fighting systems in accordance with DIN 14462 and with the approval of the local fire safety authorities) or other types of industrial water that do not attack the materials either chemically or mechanically and do not contain abrasive or long-fibre constituents.


  • 1 Helix V series pump
  • Maximum number of stages: 14
  • PE break tank, atmospherically ventilated (150 l)
  • Corrosion-resistant components in contact with the fluid
  • Shut-off valve, on the discharge side
  • Non-return valve, on suction side
  • Break tank including float valve and float switch (low-water signal transmitter)
  • Diaphragm pressure vessel 8 l, PN 16, on the discharge side
  • Low-water cut-out switchgear
  • EC-control with IP54 plastic housing, consisting of an internal power supply unit, microprocessor, analogue and digital input and output modules



Wilo-Economy CO/T-1 Helix V 403/EC


Product family: pressure-boosting systems


Series designation


With integrated break tank for system separation


Number of pumps


Pump series name


Pump design, vertical


Rate volume flow of the pump Q [m3/h]


Number of pump stages


Control device (Economy Control)

Technical data

  • Mains connection 3~230/400 V ±10 %, 50 Hz (other versions on request)
  • Max. fluid temperature 40 °C
  • Max. ambient temperature of 40 °C
  • Operating pressure 16 bar
  • Inlet pressure 6 bar
  • Rated pressure stages 6/10/16 bar
  • Nominal connection diameters on discharge side Rp 1 ¼"
  • Nominal connection diameters on inlet side Rp 1 ¼"
  • Rated speed 2900 rpm
  • Protection class IP54
  • Switching capacity P2 max. at max. 10 A = 4 kW (with > 4 kW downstream electromechanical power section)
  • Fuse protection on mains side AC 3 according to motor power and EVU regulations
  • Approved fluids (other fluids on request): Note regarding fluids: Approved fluids are generally waters which do not attack the materials used, neither chemically nor mechanically, and do not contain any abrasive or long-fibre constituents.
    • Pure water without settling sediments
    • Process water, cold water, cooling water and rainwater
    • Drinking water
    • Firefighting water


  • Impellers and stage chambers 1.4301/1.4404 stainless steel
  • Pump housing made of 1.4301/1.4404 stainless steel
  • Shaft 1.4301/1.4404 stainless steel
  • Gasket EPDM (EP 851) / FKM (Viton)
  • Housing cover made of 1.4301/1.4404 stainless steel
  • Housing bottom 1.4301/1.4404 stainless steel
  • Mechanical seal of B-carbon/tungsten carbide, SiC/carbon
  • Pressure shroud made of 1.4301/1.4404 stainless steel
  • Bearing of tungsten carbide
  • Pump base EN-GJL-250
  • Pipework made of 1.4307 stainless steel


  • Water-supply unit ready for connection, built on PE baseplate, complete pipework, including all necessary valves and shut-off devices (excluding shut-off device on the inlet side), pressure sensor kit, stainless steel high-pressure multistage centrifugal pump in the glanded version (Helix V series) and EC controller mounted and wired ready for connection; trip electronics for low-water cut-out switchgear available in the control device
  • Diaphragm pressure vessel: 8 l/PN 16 located on the discharge side with a butyl rubber diaphragm, completely safe in accordance with food safety laws; for testing and inspection purposes, with a shut-off device, with drain and flow device according to DIN 4807
  • Controller: the system is standard-equipped with an EC-controller
  • Pressure sensor: 4 to 20 mA, on the discharge side for activating the central EC-controller
  • Pressure indication: Pressure gauge on the discharge side; additional digital display of the discharge pressure in the alphanumeric display of the EC controller

Scope of delivery

  • Factory-mounted, ready for connection pressure-boosting system checked for functionality and impermeability
  • Installation and operating instructions


Other mains connections on request


Installation and operating instructions

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