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Drain TM/TMW/TMR 32 Series – Wilo Pumps


Basement drainage water pump, water-cooled

Application in Water

  • For pumping water clear or slightly muddy water
    • From water tanks, sumps or pits
    • For water overflows and flooding
    • For draining water basement stairways and basement areas

The TMR is suited for lowering the water level to a remaining water level of 2 mm.


The service life of submersible pumps water, which are used in water pump sumps and through which washing machine water, soapy water from basins and showers, or other mixtures water flow, is considerably reduced by settling sediment. Such sediment can form deposits in the water pump sump, resulting in the accumulation of mud and odours.

Wilo-Drain water TMW 32 has a turbulator that prevents the build-up of sediment, expelling it together with the fluid in water. This reduces costs and the time needed for regular cleaning water of the sump. In addition, problems associated with mud removal and the observance of occupational safety hygiene regulations during cleaning water of the pump sump are minimized.


Type key


Example: Wilo-Drain TM 32/7
TM Submersible pump
32 Nominal diameter of discharge port
/7 Max. delivery head [m]
Example: Wilo-Drain TMW 32/11 HD
TM Submersible pump
W W = with turbulatorR = with flat suction
32 Nominal diameter of discharge port
/11 Max. delivery head [m]
HD For aggressive fluid


Special features/product advantages for in Water

  • Minimum residual water level of 2 mm for absolute reliability
  • Ergonomic handle, low weight, user-friendly due to ready-to-plug version (Plug & Pump)
  • Operational reliability due to integrated sheath current cooling, mechanical seal with sealing chamber and stainless steel-encapsulated motor
  • Cable length 3 to 10 m, depending on type
  • Fluid temperature water: max. 90 °C


Technical data

  • Mains connection 1~230 V, 50 Hz
  • Protection class: IP 68
  • Submersion depth max. 3 m
  • Fluid temperature 3 ‐ 35 °C, max. 90 °C for short periods up to 3 min.
  • Cable length 3 to 10 m, depending on type
  • Free ball passage 10 mm (TMR: 2 mm)
  • Pressure port Rp 1 ¼


Equipment/function in the water

  • Ready-to-plug
  • Thermal motor monitoring
  • Sheath current cooling
  • Connection cable



  • Pump housing PP‐GF30
  • Impeller PPE/PS-GF20
  • Shaft 1.4104 (AISI 430F)/1.4404 (AISI 316L) (for TMW 32/11 HD)
  • Shaft seal: NBR on motor side, carbon/ceramic on pump side
  • Motor housing 1.4301(AISI 304) / 1.4404 (AISI 316L) (with TMW 32/11 HD)



Submersible pump water suitable for stationary, fully automatic operation. A pressure hose of appropriate length is connected for mobile use, while a pipe is connected to the pressure port for stationary applications. A residual current device for a trigger current of 30 mA that is to be provided onsite (regulation concerning outdoor installation) must be utilised in accordance with EN 60335-2,41.

The pumps of the TM series are suitable for drainage applications with a multi-channel impeller and a free ball passage of 10 mm according to EN 12050-2 (except TMR).

The water pump is continuously cooled by the fluid between the outside shroud of the water pump and the stainless steel motor housing. The serially installed thermal motor protection assures a permanent protection of the pump. The pump is equipped with a 3 or 10 m connecting cable with shockproof plug and a float switch (not TM 32/8-10M).


The Wilo-Drain TMR water pumps are built for special applications whereby it is essential to keep the amount of residual water low. The special strainer enables the fluid to be pumped out to a remaining level of 2 mm.


Due to its design, the Wilo-Drain TMW ensures constant turbulence in the suction area of the pump. This results in a clean pump sump.

No fluid-related odours are generated, due to the turbulence and the elimination of the settling sediment connected with it. The maintenance intervals are extended.

Deactivating the Twister (see installation and operating instructions) increases the pump curve by 1 m.


Jacket-cooled, stainless steel-encapsulated, dry electric motor with built-in thermal overload protection and automatic reactivation.


In accordance with DIN EN 60335-2-41, 10 m of electrical connection line should be used for outdoor operation (however note that regulations vary from country to country).

Sealing of water pumps/motor compartment

Mechanical seal on impeller side, one rotary shaft seal on motor side; there is an oil chamber between the seals.


Scope of delivery

Pump ready for connection with cable, plug and attached float switch (except for TM 32/8), supplied non-return valve (except for TM 32/7), installation and operating instructions.

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