Star-Z
Glandless pump circulator
- AC pumps with electrical quick connection
- All components that come in contact with the fluid comply with the latest directives.
Wilo-Star-Z20/1
Number of results: [10]
Pump connection
Port-to-port length L0
| Product description | Pump connection | Pump connection (alternative designation) | Port-to-port length L0 | Maximum operating pressure PN | Mains connection | Gross weight, approx. m | Pieces per pallet | Article number | |
|---|---|---|---|---|---|---|---|---|---|
Star-Z 20/1 | G 1 | DN 15, RP 1/2 | 140 mm | 10 bar | 1~230 V, 50 Hz | 2.3 kg | 256 | 4028111 | |
Star-Z 20/1(15-130) | G 1 | DN 15, RP 1/2 | 130 mm | 10 bar | 1~230 V, 50 Hz | 2.3 kg | 256 | 4232172 | |
Star-Z 20/1-3(15-130) | G 1 | DN 15, RP 1/2 | 130 mm | 10 bar | 1~230 V, 50 Hz | 2.3 kg | 256 | 4232178 | |
Star-Z 20/2-3(15-130) | G 1 | DN 15, RP 1/2 | 130 mm | 10 bar | 1~230 V, 50 Hz | 2.3 kg | 256 | 4232196 | |
Star-Z 20/4-3 | G 1¼ | RP 3/4, DN 20 | 150 mm | 10 bar | 1~230 V, 50 Hz | 2.4 kg | 256 | 4081193 | |
Star-Z 20/5-3 | G 1¼ | RP 3/4, DN 20 | 150 mm | 10 bar | 1~230 V, 50 Hz | 2.5 kg | 256 | 4081198 | |
Star-Z 20/5-3(158) | G 1¼ | RP 3/4, DN 20 | 158 mm | 10 bar | 1~230 V, 50 Hz | 2.5 kg | 256 | 4232265 | |
Star-Z 20/7-3 | G 1¼ | RP 3/4, DN 20 | 150 mm | 10 bar | 1~230 V, 50 Hz | 2.9 kg | 256 | 4081203 | |
Star-Z 25/2 | G 1½ | RP 1, DN 25 | 180 mm | 10 bar | 1~230 V, 50 Hz | 2.5 kg | 256 | 4029062 | |
Star-Z 25/6-3 | G 1½ | RP 1, DN 25 | 180 mm | 10 bar | 1~230 V, 50 Hz | 2.7 kg | 256 | 4047573 |
Recommended services
Wilo-Star-Z
Design
Glandless circulator with threaded connectionApplication
Domestic hot water circulation systems in building services and industry.Equipment/function
Operating modes
- Speed stage switching (Star‐Z...-3 only)
Manual functions
- Setting of the speed stages (1 speed stage, 3 speed stages with Star-Z...-3 pumps)
Equipment
- Wrench attachment point on the pump body (Star‐Z 25 only)
- Cable inlet possible from both sides
- quick connection with spring clips
- Blocking-current proof motor
Type key
Example: | Wilo-Star-Z 20/1 |
Star | Standard pump |
Z | Circulation pump |
20/ | Nominal connection diameter |
1 | Nominal delivery head [m] |
Technical data
- Constant speed or, for Star-Z...-3, three selectable speed stages
- Fluid temperature:
- Drinking water up to 3.21 mmol/l (18 °dH): max. +65 °C, in short-time duty (2 h) up to +70 °C
- Mains connection 1~230 V, 50 Hz
- IP rating IP44
- Nominal diameter G1, G1¼, G1½
- Max. operating pressure 10 bar
Materials
- Pump housing: Bronze
- Impeller: Plastic
- Shaft: Oxide ceramic
- Bearing: Carbon, synthetic resin impregnated
Scope of delivery
- Pump
- Gaskets for threaded connection
- Installation and operating instructions
Accessories
- Screwed connections
- Adapter fittings
- Thermal insulation shells for Star-Z 20, 25
- Special brass inserted parts for screw-end pumps: Male thread/inner soldering connection
- Wilo‐S1R‐h switchgear plug-in module for Star‐Z 20/1, Z 25/2 EM (single-phase version)
- Wilo‐SK 601N switchgear in connection with Wilo‐SK 602N (as contactor) for Star‐Z 25/2 DM (three-phase version)
- Wilo‐SK 601N switchgear for timed On/Off switching for Star‐Z 20, 25