Description
The Bell & Gossett 104303 is a high-efficiency, large wet rotor circulator pump engineered for demanding hydronic heating and cooling applications. Powered by an Electronically Commutated Motor (ECM), this circulator delivers exceptional energy savings and precise flow control compared to traditional fixed-speed pumps — making it an ideal upgrade or replacement in modern hydronic systems.
Motor & Electrical Specifications
- Voltage: 115V AC, Single Phase
- Motor Type: Electronically Commutated Motor (ECM)
- Horsepower: 1/6 HP
- Amperage Range: 0.1 – 2.3 Amps
- Wattage Range: 30 – 150 Watts
Pump & System Ratings
- Maximum Pressure Rating: 175 PSI
- Body Material: Cast Iron for durability and long service life
- Design: Large Wet Rotor — fluid-lubricated bearings for quiet, maintenance-free operation
Key Features & Benefits
- ECM technology automatically adjusts motor speed to match system demand, reducing energy consumption
- Wet rotor design eliminates the need for external bearing lubrication, lowering maintenance requirements
- Cast iron body provides robust construction suited for commercial and residential hydronic systems
- Wide wattage range (30–150W) enables variable-speed operation across a broad range of flow conditions
- Single-phase 115V power supply for straightforward electrical integration
- High-efficiency classification supports green building and energy-saving initiatives
Typical Applications
- Hydronic heating and radiant floor heating systems
- Hot water recirculation
- Chilled water distribution
- Boiler system circulation
- Commercial and residential HVAC hydronic loops
The Bell & Gossett 104303 combines proven wet rotor reliability with advanced ECM motor efficiency, delivering a circulator pump that performs quietly, lasts longer, and costs less to operate over its service life. Trust Bell & Gossett’s industry-leading hydronic expertise in every installation.
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