Product Description
Wilo Star E 21 Wet Rotor Circulator
The Wilo Star E 21 is a wet rotor circulator from the Wilo Star E 21 series. Typical applications: Heating and cooling Industrial Circulation Water/Glycol concentrations up to 50% Solar Geothermal.
Article number: 3351731
Hydraulic data
| Maximum operating pressure | 145 psi |
|---|---|
| Min. fluid temperature (Tmin) | 36 °F |
| Max. fluid temperature (Tmax) | 230 °F |
| Min. ambient temperature (Tmin) | 32 °F |
| Max. ambient temperature (Tmax) | 104 °F |
| CEI | 0.41 |
| Min. Inlet Pressure 185°F (85°C) | 0.72 psi |
| Min. inlet pressure 194°F (90°C) | 4.10 psi |
| Min. Inlet Pressure 230°F (110°C) | 14.50 psi |
Materials
| Bearing | Ceramic |
|---|---|
| Pump housing material | Cast Iron HT200 |
| Impeller | PA66-GF30 |
| Shaft | Ceramic |
| Motor housing | Cast Aluminum ALSI9CU3 |
Motor data
| Mains connection | 1~115 V, 60 Hz |
|---|---|
| Rated current IN | 0.67 A |
| FLA min. (Imin) | 0.08 A |
| FLA max. (Imax) | 0.60 A |
| Power consumption P1 max | 0.06 hp |
| Power consumption P1(Q=max.) of selected impeller * number of pumps (P1) | 0.059999999999992 hp |
Installation dimensions
| Pipe connection, suction side | 0.75"-1.5" Two Bolt Flange |
|---|
Operating data
| Fluid media | Water / Ethylene glycol / Propylene glycol |
|---|
Dimensions and weight
| Length (L) | 7.26 in |
|---|---|
| Height (H) | 5.97 in |
| Width (W) | 6.38 in |
| Net weight, approx. | 8.4 lb (3.8 kg) |
Performance curve and submittal data
Dimension drawing
About the Wilo Star E 21 series
Application
- Heating and cooling
- Industrial Circulation
- Water/Glycol concentrations up to 50%
- Solar
- Geothermal
Equipment/function
- High-efficiency, EC Motor-driven technology
- Differential temperature control
- Auto mode: Automatically adjusts to the system demand
- Three HD modes –proportional control
- Four speed control
- LED display and adjustment buttons for easy set-up and changes
Technical data
- Fluid temperature range: 36°F to 230°F
- Maximum operating pressure: 145 PSI (10 Bar)
- Cast Iron HT200 pump body
- Composite PA66+30%GF impeller
- Ceramic shaft
Scope of delivery
- Plastic Composite Check Valves (Included but optional)
Your advantages
- High-efficiency, EC Motor-driven technology
- Differential temperature control
- Auto mode: Automatically adjusts to the system demand
- Three HD modes –proportional control
- Four speed control
- LED display and adjustment buttons for easy set-up and changes
Documents and downloads
Call for pricing (416) 236-2338 or email sales@bramhambros.com
Product Videos
Custom Field
Brand Wilo
Series Star E 21
Part Number 3351731
Maximum operating pressure 145 psi
Max. fluid temperature (Tmax) 230 °F
Mains connection 1~115 V, 60 Hz
Pipe connection, suction side 0.75"-1.5" Two Bolt Flange
Design Type Wet rotor circulator
