Armstrong Fluid Technology 110223-321 Pump

The Armstrong Fluid Technology 110223-321 Pump, specifically the Astro 280SS model, is a high-performance stainless steel circulator pump designed for efficiency in potable water and open-loop heating systems. This 3-speed circulator pump operates at 115Vac, single phase, and features a maintenance-free design with ceramic bearings and a ceramic shaft to ensure quiet, long-lasting operation. With a maximum flow rate of 30 GPM and a maximum head of 31.2 feet, it is ideal for residential and light commercial applications, including radiant heating and domestic hot water recirculation. The lead-free stainless steel construction meets strict NSF 372 standards, making it safe for drinking water. Installation is streamlined thanks to the flange-to-flange compatibility with common 3/4", 1", 1 1/4", and 1 1/2" flanges, along with a convenient plug-in terminal strip for fast electrical wiring. For added versatility, it includes a removable high-flow check valve to prevent backflow in complex hydronic circuits.

Key Benefits:

• Corrosion Resistance: Lead-free stainless steel body ensures durability in potable water and oxygen-rich open-loop systems.
• Adjustable Performance: Integrated three-speed switch allows for precise flow matching to meet specific system requirements and reduce energy consumption.
• Quiet & Reliable: Features a water-lubricated maintenance-free design with ceramic components for near-silent operation.
• Universal Replacement: Designed with flange-to-flange dimensions that simplify the replacement of competing circulator models.
• Easy Installation: Includes a large wiring box and a pre-installed check valve that can be removed in seconds if not required.

Common Questions:

• Can this pump be used for drinking water? Yes, the Astro 280SS is constructed from stainless steel and is NSF 372 certified for potable water applications.
• What size flanges does this pump require? It is compatible with standard 2-bolt flanges ranging from 3/4" to 1 1/2", making it adaptable to most residential piping.
• Does it require manual lubrication? No, this is a maintenance-free wet-rotor design where the pumped fluid lubricates the internal components.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.

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