Armstrong 110119MF-100 H-51-3 Cast Iron Pump 1/4HP 3PH

School and office HVAC systems use Armstrong 110119MF-100 H-51-3 for closed-loop hydronic heating and commercial circulation. Its 1/4 HP three-phase motor operates at 1725 RPM, while the bronze-fitted cast iron body, 1.5-inch flange, and 175 PSI maximum pressure support institutional heating systems. Confirm the 208 to 230 or 460 V supply, mounting orientation, and system curve before startup.

The Armstrong H-51-3 is supplied as a complete pump with horizontal or vertical in-line mounting. Its bronze-fitted construction supports compatible closed-loop service, while verified data does not include GPM, amp draw, impeller material, seal type, dimensions, weight, thermal protection, or self-priming capability. Match the pump to the hydronic duty point and verify the 225°F operating limit before installation.

Key Features of Armstrong 110119MF-100 H-51-3

- 1/4 HP motor supports school, office, and commercial hydronic heating systems.
- 208 to 230 or 460 V three-phase operation suits institutional power systems.
- 1725 RPM operation supports the specified H-51-3 circulation configuration.
- 1.5-inch flanged connection supports compatible commercial hydronic piping.
- Cast iron bronze-fitted body supports closed-loop heating service.
- Horizontal or vertical in-line mounting accommodates different mechanical-room layouts.
- 175 PSI maximum pressure supports compatible commercial hydronic system design.
- 225°F maximum operating temperature supports approved heating applications.
- Flow, amperage, impeller, seal, dimensions, weight, protection, and warranty require confirmation.

Why Choose Armstrong 110119MF-100 H-51-3

This Armstrong institutional heating pump combines three-phase operation with flexible in-line mounting and bronze-fitted construction.

- Build: Cast iron bronze-fitted construction and in-line mounting support compatible institutional heating systems.
- Value: Flexible voltage and mounting orientation can simplify commercial replacement planning.
- Audience: School facility engineers, office-building contractors, boiler technicians, HVAC installers, and maintenance teams can specify this model.

Applications & Use Cases

Use the Armstrong 110119MF-100 H-51-3 for school HVAC, office heating, closed-loop hydronics, and commercial boiler circulation. Physical dimensions, unit weight, and connection reach were not supplied, so verify the 1.5-inch flange spacing, mounting orientation, valve clearance, motor access, lifting room, and wiring position before installation.

Warranty & Support

- Warranty: Armstrong USA general terms provide 12 months from installation, not exceeding 18 months from shipment, for applicable non-E.2 products.
- Verify voltage, phase rotation, purge air, inspect seals, confirm pressure, and check mounting alignment during commissioning.

Clean strainers, monitor the cast iron body for leakage, and inspect the flange and bronze-fitted assembly during scheduled service. Purchase the Armstrong 110119MF-100 H-51-3 commercial hydronic pump from Mulmotor.com for authentic equipment, applicable factory warranty protection, and pump support.