Wilo-Star-Z

Explanation of designation

Example:	Wilo-Star-Z 20/1
Star	Standard pump
Z	Circulation pump
20/	Nominal diameter for connection
1	Nominal head [m]
-3	3 speed steps

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Overview

Single-phase pumps with quick electrical connection
All plastic parts in contact with pumped media have KTW approval

Type

Glandless circulation pump with threaded connection

Application

Potable water circulation systems for industrial and civil engineering applications.

Equipment/function

Modes of operation

Switching speed steps (Star-Z...-3 only)

Manual control

Speed step regulation (1 speed step, 3 speed steps for Star-Z...-3)

Equipment

Keyhole moulding on the pump housing (Star-Z 25 only)
Double-sided cable entry option
Quick connection via spring clamp terminals
Blocking current proof electric motor

Model overview

Products

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Product designation	Article number
Star-Z 20/1	4028111
Star-Z 25/2 EM	4029062
Star-Z 25/6-3	4047573
Star-Z 20/4-3	4081193
Star-Z 20/5-3	4081198
Star-Z 20/7-3	4081203

Those. information

Scope of delivery

Pump
Seals for screw connections
Installation and Operating Instructions

Technical data

Constant speed or three selectable speed stages for Star-Z...-3
Pumped liquid temperature:
- Drinking water up to 3.21 mmol/l (18 °dH): max. +65 °C, in non-uniform mode (2 h) up to +70 °C
Connection to mains 1~230 V, 50 Hz
Protection class IP44
Nominal diameter Rp ½, Rp 1
Max. operating pressure 10 bar

Materials

Pump housing: bronze
Impeller: synthetic material
Shaft: oxide ceramic
Bearings: Graphite impregnated with synthetic resin

Download

Wilo-Star-Z/-ZD	Download
Documentation	Download

Colors

DOP

Wilo CAD

The Wilo CAD online library contains DWG drawings of Wilo pumping equipment. In this library, the dimensions of the pumping equipment are given as a guideline. Please note that the contents of the Wilo CAD online library are subject to technical changes.

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Wilo CAD online library