Armstrong E33.2B Series 3 Inch Bronze Circulating Pump

Armstrong E33.2B 3″ Bronze Pump

The Armstrong E33.2B is a 3-inch top-tier bronze circulating pump in the ARMflo series, specifically engineered to neutralize corrosion in massive potable water and open-loop distribution systems. Its oversized non-ferrous casing is calibrated to stabilize internal pressure while neutralizing the oxidative effects of oxygen-rich water. By integrating an oversized bronze impeller assembly, this unit optimizes laminar flow and facilitates rapid thermal distribution, ensuring that extensive plumbing networks maintain consistent water temperatures at every fixture under sustained high-volume loads.

Utilizing a high-torque motor architecture, the E33.2B executes precise torque delivery to maintain constant flow rates in high-demand potable circuits. The integrated mechanical seal assembly is engineered to sustain vacuum-tight integrity up to 230°F thermal thresholds, preventing fluid loss at the shaft entry point. By leveraging a precision-ground ceramic shaft and industrial-grade bearings, this configuration minimizes mechanical vibration and stabilizes rotational frequency, providing extreme reliability in continuous-duty non-ferrous commercial service.

Key Features of Armstrong E33.2B

• Powerful motor delivers high USGPM flow
• Durable 3 inch bronze body stops corrosion
• Leak proof design prevents thermal leaks
• Superior rotor system ensures quiet operation
• Max 140 USGPM flow capacity ensures performance
• Practical 3 inch bronze flanges for easy setup
• Versatile 52 foot head for circulation