Circulation pump Wilo-STAR-Z 20/4-3(150mm)
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Circulation pump Wilo-STAR-Z 20/4-3(150mm) 4081193
The Wilo-STAR-Z 20/4-3 circulating pump is a fixed displacement, 3-speed pump with an installation length of 150mm, designed for circulating water in heating systems. The unit is designed to work with water of hardness up to 18 °dH. Its design ensures noiseless operation and effectively prevents scale buildup for long-lasting and maintenance-free use
Thanks to its robust construction and high-quality materials, this pump guarantees reliability and efficiency, making it ideal for domestic and industrial installations
Technical data
| Parameter | Value |
|---|---|
| KIWA certification | yes |
| Frequency | 50 Hz |
| Installation length | 150 mm |
| Grade of material | Bronze (Rg 5) |
| Flange pressure class | PN 10 |
| Pressure class of the device | PN 10 |
| IEC insulation class | F |
| Number of phases | 1 |
| Max. operating pressure | 10 bar |
| Max. medium temperature (continuous) | 65 °C |
| Max. capacity (max. flow) | 3.68 m³/h |
| Max. headroom | 4,7 m |
| Body material | Bronze |
| Impeller material | Plastic |
| Minimum medium temperature (continuous) | 2 °C |
| Motor power | 71 W |
| Switching voltage | 1 x 230 V |
| Nominal flow rate | 3.5 m³/h |
| Power consumption of the pump (solpump) | 71 W |
| Motor power consumption (P1) | 0.07 kW |
| Electrical connection | Terminals |
| Rated current | 0,31 A |
| Nominal flow rate (BEP) | 1.76 m³/h |
| Motor speed control | None |
| Connection type | External cylindrical gas thread (BSPP) |
| Pump body connection size | 1 1/4 inch |
| Self-priming | no |
| Degree of protection (IP) | IP44 |
| Normative diameter of the connection (outlet) | 32 mm |
| Ambient temperature | 0 ... 40 °C |
| Average temperature (continuous operation) | 2 ... 65 °C |
| Rated voltage range | 230 V |
Summary
Wilo-STAR-Z 20/4-3(150mm) Circulation Pump 4081193 is a high-efficiency device that provides quiet and reliable circulation in heating systems. Its bronze construction and the use of an open, multi-channel impeller prevent scale buildup, which minimizes operation and maintenance
Item number: 4081193