Description
The Armstrong Fluid Technology 106285MF-132 is a 3/4 HP single-phase circulator pump designed for reliable hydronic system performance in commercial and light industrial HVAC applications. Operating on dual-voltage 115/230V power, this pump features a rugged cast iron body and a non-ferrous impeller to support efficient fluid movement in heating and cooling loops. It is equipped with built-in thermal overload protection for motor safety and permanently lubricated, maintenance-free bearings to reduce service requirements. This model (S57BF) is configured for use with 3-inch flanged connections, making it suitable for retrofit or replacement in existing Armstrong pumping systems.
Key Features
- 3/4 HP single-phase circulator pump for hydronic HVAC systems
- Dual-voltage operation: 115/230V AC
- Cast iron pump housing for durability in commercial applications
- Non-ferrous impeller for corrosion resistance and stable performance
- Built-in thermal overload protection for motor safety
- Permanently lubricated, maintenance-free bearings
- Designed for use with 3″ flanged piping connections
- Armstrong S57BF configuration for compatible system replacement and service work







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