Armstrong 116439MF-132 H-53 Cast Iron In-Line Circulator Pump 1/2 HP

The Armstrong 116439MF-132 is a Model H-53-1 BF (Bronze Fitted) cast iron in-line circulator pump designed for hydronic heating and cooling, multi-stage zoning, and general industrial service applications. This maintenance-free circulator features a 1/2 HP motor, 5.25-inch impeller, and delivers up to 80 GPM maximum flow rate with a 28-29 ft maximum head.

Key Features:

• Standard three-piece modular construction with radially-split body for easy maintenance
• Back pull-out design allows servicing without disconnecting pipes
• Oversized shaft made from special alloy steel for durability
• Centrifugal impeller with 5.25-inch diameter ensures maximum fluid delivery
• Positive mechanical seal with ARMseal construction for years of noise-free operation
• Permanently lubricated ball bearings require no maintenance
• Universal replacement shaft and bearing module reduces inventory costs
• 1-1/2 inch NPT flanged connections
• 115/230 VAC dual voltage, single phase operation
• 1800 RPM motor speed

Part of Armstrong's trusted Series H line, this circulator has been used by HVAC professionals for decades due to its proven reliability and cost-effective operation. The bronze fitted construction and maintenance-free design make this pump ideal for closed-loop hydronic systems. Note: This unit is designed for hydronic heating systems and should not be used in potable water applications.