Wilo-PB | Wilo


Safe and stable pressure boosting in the living area.

Your advantages
PB-400 EA

Safe and stable pressure boosting in the living area.

The Wilo-PB is a non self-priming, single-stage centrifugal pump for automatic water supply/pressure boosting. It is a downward installation for the supply from a tank (e.g. elevated tank) on the rooftop to extraction points located beneath for single-family/two-family houses. It is the ideal pump in case of low or fluctuating water pressure in the public distribution network and it guarantees a stable water pressure due to an automatic operation.

Your advantages

  • Dry-running protection for high operational safety
  • High reliability thanks to automatic operation and corrosion protection through coated hydraulics
  • Standardised design for easy installation
  • Compact design and quiet running (55 dbA) for domestic use
  • Low power consumption thanks to automatic control
Series description


Non self-priming single-stage centrifugal pump of in-line design


  • Automatic water supply/pressure boosting for single-/two-family houses from a tank to extraction points located beneath


  • Directly flanged dry motor
  • Shaft sealing with mechanical seal
  • Thermal motor protection
  • Flow switch, on the pressure side for automatic operation and dry-running protection
  • Operating options Auto / Off / Manual

Scope of delivery

  • Pump
  • Installation and operating instructions
  • Installation accessories: 2 screwed connections, nipples and gaskets each

Type key




Pressure boosting pump


Performance indicator: 20 x 10 = 200 W


Serial number


Frequency 50 Hz



Technical data

  • Mains connection 1~230 V ± 10 %, 50 Hz
  • Connection (pressure and suction side): from G¾", Rp1, Rp1¼" – depending on version
  • Fluid temperature +5 °C to +80 °C
  • Ambient temperature: 0 °C to 40 °C
  • Storage temperature -20 °C to +60 °C
  • Max. inlet pressure: 3.0 bar 3
  • Max. operating pressure: 5.0 bar
  • Start-up/switch-off volume flow: 2 l/min
  • Protection class: IPX4


  • Pump housing: Cast iron
  • Impeller: Plastic
  • Shaft: Stainless steel
  • Mechanical seal: Carbon/ceramic

Installation and operating instructions


Article Number 3076725
Edition 2018-01
Page format 209.9 x 297.0 mm
Number of pages 72
PDF (3 MB)

Certificate REACH (Documents)

REACH regulation

Edition 2020-08
Page format 209.9 x 296.7 mm
Number of pages 4
PDF (1 MB)
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