Armstrong S-57-3 Series Bronze Centrifugal Pump 3/4HP 3 Phase

Armstrong S-57-3 Bronze Pump

Optimized for high-demand circulation, the Armstrong S-57-3 Bronze utilizes a non-ferrous architecture to neutralize oxidation in potable and domestic water systems. Its internal centrifugal volute is calibrated to stabilize fluid movement while minimizing turbulent kinetic energy during continuous operation. By prioritizing precise impeller clearance, this unit facilitates consistent laminar flow and maintains structural integrity in open-loop systems, ensuring reliable performance across residential and commercial distribution networks without the risk of ferrous contamination.

Utilizing a NEMA-rated 3-phase motor architecture, this 3/4HP configuration executes precise torque delivery to mitigate electrical consumption during peak demand. The integrated mechanical seal assembly is engineered to sustain vacuum-tight integrity up to 250°F thermal thresholds, preventing leakage at critical junctions. By leveraging permanently lubricated bearings and a corrosion-resistant shaft, this setup minimizes axial deflection and stabilizes rotational frequency, significantly extending the operational life in high-temperature potable water applications.

Key Features of Armstrong S-57-3

• Powerful 208-460V motor ensures 1750 RPM
• Durable bronze withstands 175 PSI pressure
• Leak proof seal stops 250F leaks
• Superior shaft system reduces maintenance costs
• Max 125 USGPM flow ensures circulation
• Practical bronze connection for 2 inch
• Versatile service for 55 foot head