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Circulator Pump — 1" (SPM-A Series)
The smallest and most compact circulator in the collection, built around an ECM permanent-magnet motor with external PWM control and five selectable operating modes (Auto, Proportional Pressure, Constant Pressure, Constant Speed, Night Setback).
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High-efficiency variable-speed circulator pump for boiler or heat pump systems, offering multiple control modes with low power consumption.
| Series | SPM-A (incl. SPM25-6-130A) |
|---|---|
| Connection | 1" (25mm) inlet/outlet |
| Max flow | 44 GPM |
| Max head | 6m (~20 ft) |
| Power | 230V 50/60Hz, 4–65W, EEI ≤ 0.20 |
| Max system pressure | 10 bar |
| Liquid temperature range | +2°C to +110°C |
| Ambient temperature range | 0°C to +40°C |
| Motor | ECM permanent-magnet, external PWM control |
| Operating modes | Auto, Proportional Pressure, Constant Pressure, Constant Speed, Night Setback |
| Protection | Locked-rotor, over/undervoltage |
| Series capacity | Up to 40kW single pump, 95kW in series |
| 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.
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