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Design
Glandless circulation pump with threaded connection. Preselectable speed stages for power adjustment
Application
Hot-water heating systems of all kinds, industrial circulation systems, cold water systems and air-conditioning systems
Type key
| Example: | Wilo-Star-RS 25/4 | | Star-RS | Standard pump (screw-end pump) | | 25/ | Nominal connection diameter Rp | | 4 | Nominal delivery head [m] at Q = 0 m3/ h |
Special features/product advantages
- Suitable for any installation location with a horizontal shaft; terminal box in 3-6-9-12 o'clock position
- Three preselectable speed stages for load adjustment
- Easy and safe installation due to practical wrench attachment point on pump body
- Simplified electrical installation due to terminal box with removable threaded cable connection that can be used on both sides; quick connection with spring clips
Technical data
- Permissible temperature range -10°C to +110°C
- Mains connection 1~230 V, 50 Hz
- Protection class IP 44
- Threaded connection Rp ½, Rp 1 or Rp 1¼
- Max. operating pressure 10 bar
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Equipment/function
Operating modes Manual functions - Setting of speed stages (3 speed stages)
Equipment - Wrench attachment point on pump body
- Cable lead-in possible on both sides
- Quick connection with spring clips
- Blocking current-proof motor
Materials
- Pump housing: Grey cast iron
- Impeller: Plastic
- Shaft: stainless steel
- Bearing: Carbon, metal impregnated
Scope of delivery
- Pump
- Seals
- Installation and operating instructions
Options
- Version ...RG with housing made of red brass
- Version ... -130 with short overall length of -130 mm
Accessories
- Screwed connections
- Adapter fittings
- Thermal insulation shells
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