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Circulation pumps Halm HEP-Optimo 20-4.0 G130Order no.: 90 029 42 
XXX.XX
€/unit
immediately available Description For use in heating, air conditioning and industrial systems • With digital display of current pump output • Integrated night-time reduction • Manual start-up assistance • Vent screw • Automatic rotational speed control (proportional pressure, constant volume) or fixed rotational speed levels (constant pressure) can be adjusted via a rotary knob • Pre-assembled, screw-connection right-angle plug • External motor protection not required • With connection plug • Screw connection not included Technical data: • Operating voltage: 230 V, 50 Hz • Protection type: IP42 • Temperature range: +2°C to +110°C • Max. operating pressure: 10 bar • Pump housing material: Grey cast iron cathodic dip-coated, corrosion resistant • 130 mm design (without heat insulation jacket) See catalogue
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| Manufacturer item no.: | 0622-34004.1-71 |
| Male thread: | DN 32 (1 1/4") |
| Type: | 20-4.0 |
| Nominal size: | DN 20 (3/4") |
| Power [W]: | 4...20 |
| Brand: | Armstrong |
| EEI ≤: | 0.17 |
| Housing material: | Cast iron |
| Connection size: | DN 20 |
| Connection: | External thread |
| Pressure level: | PN 10 |
| Supply voltage:: | 1 x 230 V |
| Power consumption [W]: | 4 - 20 |
| Frequency: | 50/60 Hz |
| Max. Discharge head [m]: | 4 |
| Protection type (IP): | IP42 |
| Max. medium temperature (continuous operation) [°C]: | 110 |
| Min. medium temperature (continuous operation) [°C]: | 2 |
| Installation length [mm]: | 130 |
| Connection dimension pump housing: | 1 1/4 inch |
| Energy Efficiency Index (EEI): | 0.17 |
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