Star/Star-S
Wet rotor circulator
- Reliable wet rotor technology
- Quick connect wiring
- Powerful starting torque
- Ultra quiet
- Installable hi-temp check (RFC model)
- RFC Patented Rotating Flange: US 8,297,664 B2
Wilo-Star Series Brochure
Number of results: [11]
Pump connection
Mains connection
Recommended services
Star NaMex
Design
Wet rotor circulation pump, with flanged or union connections. Pre‐selectable speeds to adjust the capacity on "S" versionsApplication
Hot Water Heating Systems
Chilled Water
Air Conditioning Systems
Water/Glycol concentrations up to 50%
Solar
Geothermal
Max. Flow: 38 GPM
Max. Head: 33 feet
Equipment/function
- 3 manual selectable speed stages ("S" type only)
- Reliable wet rotor technology
- Quick connect wiring
- Powerful starting torque
- Ultra quiet
- Installable hi-temp check (RFC model)
- RFC Patented Rotating Flange: US 8,297,664 B2
Type key
Wilo-Star S 21 RFC | |
Star | Standard pump |
S | 3 Speed |
21 | Max. Head |
RF | Rotating Flange |
C | Check Valve |
Z | Stainless Steel Volute |
F | Flanged |
Technical data
- Max Temp Range: 14°F to 230°F (-10°C to 110°C)
- Max Amb Temp: 104°F (40°C)
- Electrical Connection: 1~115v, Star S33 available in 1~115v, 230v
- Max Working Pressure: 140 PSI (10 Bar)
Materials
- Cast Iron Volute
- Engineered Composite Impeller
- Stainless Steel Shaft
- Carbon Impregnated Bearing
- Steel Terminal Box
Scope of delivery
- Pump
- Flange gaskets
- Installation and operating instructions
Options
- Ventilation pump Star‐RSL 25/6 with automatic ventilation connection
- Special version 25/4 and 25/6
- Overall length 130mm (cast iron)
- Overall length 180mm (red bronze)