Wilo-Economy CO-1 MVIS.../ER

Series description


Water-supply unit with a glandless, non-self-priming high-pressure multistage centrifugal pump


  • Fully automatic water supply in inlet mode, either from the public water supply network or from a tank.
  • Pumping of drinking water, domestic hot water, cooling water, fire water (apart from fire-extinguishing 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.

Type key

Example:Wilo-CO-1 MVIS 204/ER
COCompact pressure boosting system
1With one pump
MVISPump series
2Rated volume flow of the single pump [m3/h]
04Number of single-pump stages
ERControl device; ER = Economy controller

Special features/product advantages

  • Virtually noiseless system due to a glandless stainless-steel high-pressure multistage centrifugal pump
  • Up to 20 dB[A] quieter than conventional systems with comparable hydraulic output
  • Operationally reliable due to combination of MVIS pump series with ER-1 switchgear

Technical data

  • Mains connection 3~230/400 V ±10 %, 50 Hz (other versions on request)
  • Max. fluid temperature 50 °C
  • Max. ambient temperature of 40 °C
  • Operating pressure 6 bar
  • Inlet pressure 6 bar
  • Switching pressure stages 6/10/16 bar
  • Nominal connection diameters, on inlet side Rp 1¼ - Rp 1½
  • Nominal connection diameters on discharge side R 1¼
  • Rated speed 2800 rpm
  • Protection class IP54 (ER control device)
  • Switching capacity P2 max. at max. 10 A = 4 kW (for > 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):
    • Pure water without settling sediments
    • Process water, cold water, cooling water and rainwater
    • Drinking water
    • Fire water
    Note on 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.


  • 1 MVIS series pump
  • Maximum stage number: 10
  • Three-phase current glandless pump motor
  • Components that come in contact with the fluid are corrosion-resistant
  • Base frame made of galvanised 1.4301 stainless steel, with height-adjustable vibration absorbers for insulation against structure-borne noise
  • Shut-off valve on pressure side
  • Non-return valve, pressure side
  • Diaphragm pressure vessel 8 l, PN16, pressure side


  • Connection-ready water-supply unit, mounted on base frame made of stainless steel including vibration absorber, complete pipework made of stainless steel, including all necessary fittings and shut-off devices (except for inlet-side shut-off device), pressure control kit, stainless steel glandless high-pressure multistage centrifugal pump (MVIS) and ER-1 switchgear, mounted, wired and ready for connection; trip electronics in switchgear for low-water cut-out.
  • Diaphragm pressure vessel: 8 l/PN16 located on the discharge side with a butyl rubber diaphragm, completely safe in accordance with food safety laws; for testing and inspection purposes, with shut-off ball cock, with drain and throughflow fitting according to DIN 4807
  • Switchgear: the system is standard-equipped with an ER-1 Economy Controller


  • Foot 1.4301 stainless steel
  • Impellers 1.4301 stainless steel
  • Stage chambers 1.4301 stainless steel
  • Pressure shroud 1.4301 stainless steel
  • Shaft 1.4122 stainless steel
  • Bearing/mechanical seal made of carbon, resin-impregnated
  • Pipework made of 1.4571 stainless steel

Scope of delivery

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


Other mains connections on request

Duty chart

Duty chart


General overview

Edition 2017
Page format A4
Number of pages 72

PDF (46 MB)


Wilo-ER 1, ER 1-A

Article Number 2021982
Edition 0705
Version number 02
Page format A4
Number of pages 13

PDF (1 MB)


Wilo–Multivert MVIS

Article Number 2020405
Edition 0009
Version number 02
Page format A4
Number of pages 13

PDF (1 MB)


Wilo-Economy CO-1 ..., CO/T-1 ... .../CE+ .../ER, Wilo-Comfort-Vario COR-1 ... ...-GE .../VR

Article Number 2527299
Edition 1007
Version number 03
Page format A4
Number of pages 35

PDF (2 MB)



PDF: Wilo-Economy CO-1 MVIS.../ER


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