Wilo-Initial Drain


Automatic motor protection with temperature sensor
Automatic mode via float switch
Superior reliability due to robust material and double O-ring

A type

Submersible drainage pump


  • Pumping
  • Waste water free of faeces and long-fiber fractions
  • Contaminated water

Equipment / function

  • Power cable with plug
  • Connected float switch
  • Thermal motor protection

Contents of delivery

  • Pump with 10 m cable, mains plug and connected float switch
  • Hose connection Ø 24/32 mm and Rp 1 "thread
  • Installation and operating instructions

Model overview


Product designation Network connection Flow rate max. Q Head max. H Optimum flow Q opt Article number
Initial DRAIN 10-7 1~230 V, 50 Hz - - 8.667m³/h 4168021
Initial DRAIN 13-9 1~230 V, 50 Hz - - 10.27m³/h 4186548

Those. information

Explanation of the name

Example Wilo-Initial DRAIN 10-7
Initial Wilo-Initial Line
DRAIN Series
10 Nominal volumetric flow in m³/h
-7 Nominal head in m

Technical Specifications

  • Connection to mains 1~ 230 V, 50 Hz
  • Protection class: IP68
  • Max. immersion depth: 5 м
  • Temperature of pumped liquid: +3 to +35 °C
  • Cable length: 10 m
  • Pressure connection: G 1½


  • Motor housing: Fe 370 galvanised
  • Pump casing: Polypropylene
  • Impeller: PA6 GF30
  • Shaft: 1.4005 (AISI 416)
  • Lip seal: NBR (nitrile rubber)
  • Seal: NBR (nitrile rubber)


Submersible pump for stationary and portable wet well installation for fully automatic operation, thanks to float switch installation.

Hydraulic part

  • The pumps of the Initial Drain series have a radial impeller and a free passage of 5 mm.
  • The connection to the pressure connection is made as vertical threaded connection Rp 1½.

Electric motor

Single-phase submersible motor with integrated thermal overload protection and automatic restart.


Equipped with a 10 m power cable with shock-proof plug and integrated float switch.


Wilo-Initial Drain Download
Documentation Download



More in this category:

Need a consultation?

We will tell you in detail about our services, types of work and typical projects, calculate the cost and prepare an individual offer!