Series description

Special features/product advantages

<TEXT> <P level="1">System with high-pressure multistage centrifugal pump of the MHIL series made of grey cast iron and stainless steel</P> <P level="1">Hydraulics made of stainless steel in combination with IE3 standard motors for 3~ motors from 0.75 kW</P> <P level="1">Two horizontally aligned high-pressure multistage centrifugal pumps of the MHIL series switched in parallel, for flow rates of up to 16 m<sup>3</sup>/h and delivery heads of up to 60 m</P> <P level="1">ElectronicControl (one switchgear per pump): programmed as master/slave. With the ElectronicControl switchgear, the operationally necessary functions are ensured by the electronic speed control technology used. The switchgear is accommodated in a plastic cabinet. </P> <P>The two ElectronicControl switchgears monitor the starts and stops of the pumps with a pressure sensor and ensure low-water cut-out, motor protection, pump cycling and stop delay of the pump. An LCD display provides information on alarms and pump operation and provides switches for the selection of the operating mode.</P> </TEXT>

Design type

Ready for connection, non self-priming water-supply unit with 2 parallel-switched, horizontally arranged high-pressure multistage centrifugal pumps with fixed speed in glanded design of the MHIL series, equipped with two ElectronicControl switchgears for speed control.


  • Fully automatic water supply and pressure boosting in residential buildings and small commercial locations.
  • Pumping of drinking water and clean process water and other water mixtures that do not chemically or mechanically attack the materials used and do not contain any abrasive or long-fibre constituents


  • Two pumps of the MHIL 3 to MHIL 5 series per system with an IE3 standard motor for 3~ motors from 0.75 kW
  • Automatic pump control with ElectronicControl for the speed control
  • Components that come in contact with the fluid are corrosion resistant.
  • Base frame made of galvanised steel
  • Pipework made of 1.4301 stainless steel
  • Stop valve on the suction and pressure side of each pump
  • Non-return valve, integrated in the ElectronicControl on the pressure side of each pump
  • Pressure gauge on the pressure side
  • Optional low-water cut-out switchgear on the suction side

Scope of delivery

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

Type key




Compact pressure boosting system


Number of pumps


Pumps of the MHIL series equipped with an ElectronicControl


Rated volume flow [m3/h]


Number of pump stages



Technical data

  • Mains connection 1~ 230 V, 50 Hz/60 Hz
  • IE3 standard motor for 3~ 230 V, from 0.75 kW
  • Fuse A, AC 3 on mains side according to motor power and EVU regulations
  • Max. fluid temperature +50 °C
  • Operating pressure 10 bar
  • Inlet pressure 6 bar
  • R2'' nominal connection diameter
  • Protection class: IP54


For the MHIL 3 and MHIL 5 series:

  • Impellers, guide vanes, stage housing made of stainless steel 1.4307
  • Pump housing made of cataphoretic-coated grey cast iron EN- GJL 250
  • Shaft of stainless steel 1.4057
  • O-ring seals made of EPDM

More information on the pumps can be found in the "Pressure boosting" chapter.


  • Base frame: made of galvanised steel, to be fastened to a concrete foundation
  • Pipework: Complete pipework of stainless steel, suitable for the connection of all standard pipe materials; the pipework is designed according to the hydraulic output of the pressure boosting system.
  • Pumps: Two pumps of the MHIL 3 to MHIL 5 series switched in parallel; all pump components that come in contact with the fluid are made of stainless steel/cataphoretic-coated grey cast iron. WRAS approval for all components that come in contact with the fluid. More information on the pumps can be found in the "Pressure boosting" chapter.
  • Valves: Each pump is equipped with an ACS-tested ball shut-off valve on the suction and pressure side and with a KTW-tested non-return valve on the pressure side.
  • Diaphragm pressure vessel: A diaphragm pressure vessel is to be designed and installed according to the installation situation.
  • Pressure indication: On the pressure gauge on the pressure side and on the display of the ElectronicControl
  • Switchgear: The system is standard-equipped with an ElectronicControl per pump in master/slave mode.


REACH Regulation

Edition 2018-10
Page format 209.9 x 296.7 mm
Number of pages 4

PDF (581 kB)


General overview 2018 International version

Article Number 2200591
Edition 2018
Version number 1
Page format 209.9 x 297.0 mm
Number of pages 72

PDF (11 MB)





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