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Circulator Pump — 1-1/4"
Steps up from the 1" model in connection size while keeping the same high-efficiency ECM permanent-magnet motor platform and the same five operating modes.
Shipping$112Free
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High-efficiency variable-speed circulator pump sized for larger hydronic systems, with multiple control modes and low power draw.
| Motor | High-Efficiency ECM Permanent Magnet |
|---|---|
| Power | 230V 50/60Hz, 10–220W |
| Speed range | 1100–4400 RPM |
| Max flow | 44 GPM |
| Max pressure | 10 bar (145 PSI) |
| Liquid temperature range | -10°C to 110°C (10°F to 230°F) |
| Connection | 1-1/4" NPT stainless steel flange union |
| Enclosure rating | IP42 |
| Control | Dual PWM (Heating PWM1 + Solar PWM2) |
| Operating modes | Same 5 modes as the 1" model (Auto, Proportional Pressure, Constant Pressure, Constant Speed, Night Setback) |
| Series capability | Can double pumps in series for double flow |
| Protection | Hysteresis protection, failsafe max-speed-on-cable-damage |
| Max head | Not published |
| Weight (net/gross) | Not published |
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Need an installer?We made it easy for you.
Listed installers are independent contractors, not MBTEK employees. They're skilled professionals familiar with our products and capable of efficient installation.
Any questions?Reach out to us.
Our team can help with product questions, sizing guidance, and next steps.