Data sheet
| Hydraulic data | |
|---|---|
| Maximum operating pressure PN | 10 bar |
| Min. fluid temperature Tmin | -10 °C |
| Max. fluid temperature Tmax | 110 °C |
| Materials | |
|---|---|
| Pump housing | Grey cast iron |
| Impeller | PP-GF40 |
| Shaft | Stainless steel |
| Bearing | Carbon, metal-impregnated |
| Motor data | |
|---|---|
| Mains connection | 1~230 V, 50 Hz |
| Rated current IN | 0.21 A |
| Max. speed nmax | 2720 1/min |
| Power consumption P1(Q=max.) of selected impeller * number of pumps P1 | 48 W |
| Emitted interference | EN 61000-6-3 |
| Interference resistance | EN 61000-6-2 |
| Protection class motor | IP44 |
| Installation dimensions | |
|---|---|
| Port-to-port length L0 | 180 mm |
Pump curves
Dimensions and dimensions drawings
Star RS
Motor horizontal
Terminal box positions for 3, 6, 9 and 12 o'clock possible
Ordering information
| Product data | |
|---|---|
| Brand | Wilo |
| Product description | Star-RS 25/4 |
| Article number | 4032954 |
| EAN number | 4016322364191 |
| Colour | Green |
| Minimum order quantity | 1 |
| Date of sales availability | 1900-01-01 |
| Successor model article number | 4164025 |
| Successor model designation | Yonos PICO 25/1-4-(EU2) |
| Packaging | |
|---|---|
| Packaging type | Cardboard box |
| Packaging property | Sales packaging |
| Pieces per pallet | 256 |
| Number per layer | 32 |
| Dimension, weight | |
|---|---|
| Length with packaging | 148 mm |
| Length L | 133 mm |
| Height with packaging | 104 mm |
| Height H | 105 mm |
| Width with packaging | 188 mm |
| Width W | 180 mm |
| Gross weight, approx. m | 2.5 kg |
| Net weight, approx. m | 2.4 kg |
Glandless circulation pump for pipe installation with manual 3-stage speed switch.
With blocking-current proof motor. Pump housing made from cast iron (bronze depending on type), impeller made from glass reinforced plastic, stainless steel shaft with metal-impregnated carbon plain bearings. Used as standard in cold-water systems up to -10°C.
Operational safety thanks to drilled-through shaft and filter unit in front of the cartridge
| Operating data | |
|---|---|
| Min. fluid temperature Tmin | -10 °C |
| Max. fluid temperature Tmax | 110 °C |
| Min. ambient temperature Tmin | -10 °C |
| Max. ambient temperature Tmax | 40 °C |
| Maximum operating pressure PN | 10 bar |
| 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 | 48 W |
| Max. speed nmax | 2720 1/min |
| Rated current IN | 0.21 A |
| Protection class motor | IP44 |
| Threaded cable connection | 1 x PG11 |
| Materials | |
|---|---|
| Pump housing | Grey cast iron |
| Impeller | PP-GF40 |
| Shaft | Stainless steel |
| Bearing | Carbon, metal-impregnated |
| Installation dimensions | |
|---|---|
| Pump connection | G 1½ |
| Pump connection (alternative designation) | RP 1 DN 25 |
| Port-to-port length L0 | 180 mm |
| Ordering information | |
|---|---|
| Brand | Wilo |
| Product description | Star-RS 25/4 |
| Net weight, approx. m | 2.4 kg |
| Article number | 4032954 |
Filtered by
Datasheet and documentation
Mechanical accessories
Pipe installation (3) | |||
Screwed connections/adapters | |||
Screwed connection Rp 1 x G 1½, 72 Set | 112047298 | ||
Screwed connection Rp 1 x G 1½, 1 Set | 4092741 | ||
Adapter G 1½/G 2 | 4105914 | ||
Pipe installation, adapter fitting (9) | |||
Threaded adapter R | |||
Threaded adapter R 2, GG | 110626790 | ||
Threaded adapter R 6, GG | 110678493 | ||
Threaded adapter R 1, GG | 110786891 | ||
Threaded adapter R 7, GG | 110787094 | ||
Threaded adapter R 24, GG | 110880596 | ||
Flanged rings RF | |||
Flanged ring RF 7, PN6 | 110628790 | ||
Flanged ring RF 9, PN6 | 110679395 | ||
Flanged ring RF 13, PN6 | 110679498 | ||
Flanged ring RF 10, PN6 | 110851499 | ||
Thermal insulation (1) | |||
Size 14 thermal insulation shell | |||
Thermal insulation shell (Size 14) | 4046444 | ||
Electrical accessories
Pump control (1) | |||
Timer switch SK 601N | |||
Switchgear SK 601N | 2120443 | ||
With Wilo as your partner, you can not only be sure of choosing high-quality product solutions, but also of benefiting from a comprehensive, worry-free package of well thought-out services. We collaborate to develop a service concept tailored to your individual needs; with our expertise and personal consultancy, we make sure that the operation of your systems is as energy-efficient, reliable and economical as possible. All the while our competent Wilo service technicians are ready to assist you with fast, reliable and on-time support.
Read moreExtended Warranty | |||
Extended Warranty Glandless pumps | 2219589 | ||
Supervision | |||
Supervision Glandless pumps | 2219320 | ||
Installation | |||
Installation Glandless pumps | 2219355 | ||
Commissioning | |||
Commissioning Glandless pumps | 2219390 | ||
Maintenance | |||
Maintenance BASIC Glandless pumps | 2219530 | ||
Maintenance COMFORT Glandless pumps | 2219416 | ||
Maintenance PREMIUM Glandless pumps | 2219545 | ||
System Optimisation | |||
System Optimisation Glandless pumps | 2219250 | ||
Energy Solutions | |||
Energy Solutions Glandless pumps | 2219285 | ||
Repairs | |||
Repair Glandless pumps | 2219609 | ||
