Wilo Star Z 20/1 EM 1PH Pump - 4028111

£370.56 (Inc. VAT)

In Stock




Wilo Star Z 20/1 EM 1PH Pump

Wilo Star Z 20/1 EM 1PH Pump is suitable for circulation systems in industry and building services. This circulator is suitable for drinking water only.

The Star Z 20/1 EM 1PH Pump is a domestic hot water circulator. This constant-speed glandless pump is designed for pipe installation and has a blocking-current proof motor. The Star Z 20/1 EM 1PH Pump housing is made of sturdy bronze, ensuring durability, and the impeller is made of fiberglass-reinforced plastic.

Features & benefits:

  • AC pumps with electrical quick connection
  • All plastic parts that come into contact with the fluid fulfill KTW recommendations
  • Thermal insulation as standard for Star‐Z 15 TT

Operating data:

  • Max. fluid temperature Tmax: 65 °C
  • Min. fluid temperature Tmin: 2 °C
  • Min. ambient temperature Tmin: 0 °C
  • Max. ambient temperature Tmax: 40 °C
  • Temperature range at max. ambient temperature +40 °C T: +2...+65
  • Max. operating pressure PN: 10 bar
  • Max. permitted total water hardness: 3.21 mmol/l (18°dH)

Motor data:

  • Emitted interference: EN 61000-6-3
  • Interference resistance: EN 61000-6-2
  • Mains connection: 1~230 V, 50 Hz
  • Power consumption P1 max: 30 W
  • Rated current IN: 0.14 A
  • Protection class motor: IP44
  • Threaded cable connection: 1 x PG11


  • Pump housing: Bronze, CC499K
  • Impeller: PPE-GF30
  • Shaft: Oxide ceramic
  • Bearing: Carbon, synthetic resin-impregnated

Star‐Z 15 TT

Star-Z 15 TT with integrated timer and thermostat, LC display with symbolic language, red button technology, and automatic detection of the thermal disinfection of the warm domestic hot water tank, as well as ball shut-off valve on the suction side and non-return valve on the pressure side.

Picking the most suitable kind of Pump is a major decision. Once you determine that Central Heating Pumps deliver the appropriate solution then the Wilo Star Z 20/1 EM 1PH Pump - 4028111 is certainly worth putting on your shortlist.


Wilo Star Z 20/1 EM 1PH Pump - 4028111 Specifications
Material Bronze
WRAS Approved 1
Head 1
Range Star-Z
Connection Size 1
EAN 4016322364214
MPN 4028111
Product Code 162484
Type Pump
Sub Type Central Heating Pump
Warranty (Years) 2
Width (mm) 101
Height (mm) 140
Weight (Kg) 2.2

Wilo Star Z 20/1 EM 1PH Pump - 4028111


£370.56 (Inc. VAT)

Stock status: In Stock

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Returns Policy - Changed Your Mind?

If you change your mind about the product when you receive it you can notify us any time within 30 days and return it for a full refund at your own cost. Any refunds will be made within 30 days of receiving your returned item. You are expected to cover the cost to return the item and your initial delivery charge will not be refunded.

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