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Wilo-Rexa SOLID-Q | Wilo

Wilo-Rexa SOLID-Q

Wilo-Rexa SOLID-Q with Nexos Intelligence – The intelligent system solution for a smart sewage pump station

Your advantages
Wilo-Rexa SOLID

Wilo-Rexa SOLID-Q with Nexos Intelligence – The intelligent system solution for a smart sewage pump station

Pumping untreated sewage is becoming increasingly demanding due to the growing prevalence of solids and fibrous material which, in turn, leads to increased operating costs. The new Wilo-Rexa SOLID-Q with Nexos Intelligence is characterised by operational reliability, energy efficiency and the highest level of digital networking. The smart combination for cost effectiveness combined with the additional convenience in your day-to-day work.

Your advantages

  • Maximum operational reliability and reduced service costs, especially for pumping untreated sewage, thanks to self-cleaning properties
  • Lower energy costs thanks to high hydraulic efficiency and up to IE5 motor technology in wet and dry well installation (based on IEC TS 60034-30-2)
  • Corrosion protection provided by an optional Ceram coating for a long service life in aggressive media
  • A Digital Data Interface (DDI) with integrated vibration monitoring, data logger, web server and digital rating plate for convenient monitoring and system integration
  • Nexos Intelligence can be integrated for pump and system optimisation
Series description
Wilo-Rexa SOLID-Q


Submersible sewage pump with and without active cooling system for pumping untreated sewage for continuous duty in the stationary and portable wet well installation, as well as for stationary dry well installation.


Pumping of

  • Untreated sewage with faeces and long-fibre components
  • Sewage containing faeces
  • Process water


  • Surface-cooled motors or self-cooling motors with active cooling system
  • Asynchronous motors up to efficiency class IE3
  • Permanent magnet motors up to efficiency class IE5
  • Longitudinally watertight cable inlet



Wilo-Rexa SOLID-Q15-98A + FKT 20.2M-4/32GX-P4




Submersible sewage pump with SOLID hydraulics


x10 = nominal discharge port e.g., DN 150


Performance indicator


Material version

  • A = Standard
  • B = Corrosion protection 1
  • D = Abrasion protection 1


SOLID impeller

  • T = closed two-channel impeller
  • G = semi-open single-channel impeller
  • Q = semi-open two-channel impeller


FKT 20.2M-4/32GX-P4


Motor type:

  • T = surface-cooled motor without cooling system
  • FK, FKT, HC = Self-cooling motor with active cooling system




Distinctive number


Shaft design

  • M = standard design
  • L = reinforced version


Number of poles


x10 = Package length in mm


Seal version:

  • G = two separate mechanical seals
  • K = block seal cartridge with two mechanical seals


With Ex approval


Engine type

  • E = Asynchronous motors:
  • P = Permanent magnet motor
  • 4 = IE class (based on ISO 60034-30)

Technical data

  • Mains connection: 3~400 V, 50 Hz
  • Submerged operating mode: S1
  • Non-immersed operating mode: S1 (FK, FKT, HC motor) or S2 (T motor, depending on performance)
  • Protection class: IP68
  • Fluid temperature: 3 - 40 °C, higher temperatures on request
  • Free ball passage:
    • T impeller: 78x105…150x150 mm
    • G impeller: 80 or 90 mm
    • Q impeller: 78 mm
  • Max. immersion depth: 20 m


  • Housing components: EN-GJL-250 or EN-GJS-500-7
  • Impeller: EN-GJL-250 or EN-GJS-500-7
  • Static gaskets: FPM
  • Sealing on pump side: SiC/SiC
  • Sealing on motor side: FPM, carbon/ceramic or SiC/SiC
  • Shaft: Stainless steel 1.4021


Submersible sewage pump as submersible monobloc unit for stationary and portable wet well and dry well installation. Portable installation is possible, depending on type.


The outlet on the pressure side is designed as horizontal flange connection. The maximum possible dry matter is 8 %. The following impeller shapes are currently used:

  • T = closed two-channel impeller
  • G = semi-open single-channel impeller
  • Q = semi-open two-channel impeller

In the SOLID-G and SOLID-Q, the gap between suction port and impeller can be readjusted later. This ensures uniform hydraulic efficiency.


Submersible motors with passive and active cooling are used for the drive:

  • T motors (surface-cooled motors) have passive cooling. They emit their heat directly into the surrounding fluid via the housing parts. For this reason, these motors can operated immersed in continuous duty (S1), depending on performance, and non-immersed in short-time duty (S2).
  • FK, FKT and HC motors are self-cooling and have an active cooling system. The waste heat is guided via the coolant (white oil or water-glycol mixture) to an integrated heat exchanger, and this releases the waste heat to the conveyed medium. As a result, these motors are suitable for continuous duty (S1) either in immersed or non-immersed state.

All motors have a sealing chamber that protects the motor from fluid ingress. It can be accessed from the outside and can be monitored with an optionally sealing chamber electrode. All filling fluids used are potentially biodegradable and environmentally safe.

In addition, depending on performance, high-efficiency motors are also available:

    • Asynchronous motors with efficiency class of IE3*
    • Permanent magnet motors with an efficiency class of IE4/5*

* (IE3/4 = based on IEC 60034-30, IE5 = based on IEC TS 60034-30-2)

The cable inlet on the motors is longitudinally watertight, cable lengths can be individually configured.


Fluid-side and motor-side sealing is possible in the following versions depending on the motor type:

  • Version G: Two independently-acting mechanical seals
  • Version K: Block seal cartridge with two independently acting mechanical seals

Scope of delivery

  • Submersible sewage pump
  • Connection cable with bare cable end
  • Fitted accessories
  • Operating and maintenance manual


  • Special voltages
  • Monitoring devices for
    • Winding monitoring with PTC thermistor sensor or Pt100
    • Sealing chamber
    • Motor/terminal room
    • Storage temperature
  • Ceram coating C0 to C3 for abrasive and corrosive fluids
  • Ex-rated according to ATEX or FM
  • Nexos Intelligence:
    • Reduced downtime and service call-outs thanks to automatic detection and elimination of clogging
    • Lower energy costs due to the integrated automatic control for the optimal operating mode of the specific system
    • Convenient control and networking with the communication network via the integrated web server and Ethernet interface with standard network protocols in the pump
    • Increased operational reliability in the event of a fault thanks to the redundancy design of the integrated pump control
    • System solution with application-specific adaptable digital functions and digital interfaces


  • Chains
  • Suspension unit or pump support foot
  • Fixation sets with anchor bolts
  • Switchgear, relays and plugs


Operation in wet well installation with non-immersed motor:

The surfacing of self-cooling motors (FK, FKT, HC motors) is permitted.

Surface-cooled motors (T motors) can be non-immersed for short periods (S2 operation) depending on the power! The maximum running time with non-immersed motor depends on the medium and ambient temperatures. The exact specifications concerning the operating mode and time (e.g. S2-15) can be found on the rating plate of the respective pump.

Dry-running protection system:

The hydraulics housing must always be immersed. In the case of fluctuating fluid levels, the system should shut down automatically once the minimum water submersion is reached. Please refer to the dimension drawings for this.

Horizontal installation:

Horizontal installation is not possible with these units!


Installation and operating instructions

Wilo Motor T 17.3, 20.2: EMU FA, Rexa SUPRA, Rexa SOLID

Article Number 6086016
Edition 2019-10
Number of pages 104
PDF (4 MB)

Wilo Motor T 17.3, 20.2: EMU FA, Rexa SUPRA, Rexa SOLID

Article Number 6086012
Edition 2019-10
Number of pages 56
PDF (3 MB)

Wilo Motor FKT 20.2, 27.1, 27.2: EMU FA, Rexa SUPRA, Rexa SOLID

Article Number 6088784
Edition 2019-10
Number of pages 108
PDF (4 MB)

Wilo Motor FKT 20.2, 27.1, 27.2: EMU FA, Rexa SUPRA, Rexa SOLID

Article Number 6086014
Edition 2019-10
Number of pages 60
PDF (3 MB)

Wilo DDI-I

Article Number 6086017
Edition 2023-06
Number of pages 108
PDF (8 MB)

Commissioning protocol Wilo DDI

Article Number 6088797
Edition 2021-01
Number of pages 2
PDF (949 KB)

Certification booklet

Wilo T motor + EMU FA, Wilo T motor + Rexa SUPRA, Wilo T motor + Rexa SOLID

Article Number 6072704
Edition 2021-07
Number of pages 116
PDF (10 MB)

Wilo FKT motor + EMU FA, Wilo FKT motor + Rexa SUPRA, Wilo FKT motor + Rexa SOLID

Article Number 6074691
Edition 2021-07
Number of pages 96
PDF (9 MB)


Wilo-Rexa SOLID-Q - The intelligent system solution for a smart sewage pump station

Number of pages 16
PDF (15 MB)

Product information Wilo-EFC. Powerful, flexible, cost-efficient.

Number of pages 8
PDF (8 MB)