Armstrong S-57-1 Series Bronze Centrifugal Pump 3/4HP 1 Phase

Armstrong S-57-1 Bronze Pump

Engineered for domestic water recirculation, the Armstrong S-57-1 AB utilizes an Admiralty Bronze construction to neutralize corrosion-induced mechanical degradation. Its centrifugal volute design is calibrated to stabilize fluid velocity while minimizing mineral deposition across internal surfaces during high-temperature cycles. By integrating a precision-balanced impeller, this unit facilitates consistent laminar flow and maintains structural integrity in open-loop systems where oxygen-rich water would otherwise compromise standard ferrous materials.

Utilizing a NEMA-rated motor architecture, the Armstrong S-57-1 AB executes precise torque delivery to mitigate electrical consumption during sustained operation. 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 configuration minimizes axial deflection and stabilizes rotational frequency, significantly extending the operational life in potable water applications.

Key Features of Armstrong S-57-1

• Powerful 3/4HP motor ensures 1750 RPM
• Durable bronze body withstands 175 PSI
• Leak proof seal resists 250F heat
• Superior shaft system reduces part costs
• Max 125 USGPM flow capacity ensured
• Practical 2 inch connection fits standard
• Versatile 55 foot head ensures flow