Armstrong 410133-303 Circulating Pump 704T

Three-phase heating zones use Armstrong 410133-303 704T for small boiler loops and multi-zone commercial circulation. Its 1/6 HP motor accepts 208 to 230 or 460 V, while the cast iron body, flexible spring coupler, and sleeve-bearing design support fixed hydronic installations. Confirm the 225°F temperature limit, bearing oiling requirements, motor phase rotation, and system curve before startup.

The Armstrong Series 700 704T uses a non-ferrous or steel standard impeller within a cast iron pump body. Its flexible spring coupler transfers motor torque, while the sleeve bearing requires periodic oiling during service. Verified data does not include GPM, maximum head, amp draw, RPM, seal material, connection size, dimensions, weight, thermal protection, or self-priming capability, so verify the final pump configuration before installation.

Key Features of Armstrong 410133-303 704T

- 1/6 HP motor supports multi-zone three-phase heating and small boiler-loop circulation.
- 208 to 230 or 460 V operation suits compatible commercial electrical systems.
- Cast iron body provides a rigid housing for fixed hydronic installations.
- Standard non-ferrous or steel impeller supports compatible heating-loop circulation requirements.
- Sleeve bearing design requires periodic oiling according to approved service instructions.
- Flexible spring coupler transfers motor torque within the circulating pump assembly.
- 225°F maximum operating temperature supports compatible commercial heating applications.
- Flow, head, amperage, RPM, seal, connections, dimensions, weight, protection, and warranty require confirmation.

Why Choose Armstrong 410133-303 704T

This Armstrong three-phase hydronic pump combines flexible motor voltage with a serviceable coupler and sleeve-bearing design.

- Build: Cast iron construction, flexible coupling, and oil-lubricated sleeve bearings support fixed commercial heating service.
- Value: Multi-voltage capability simplifies electrical planning, while serviceable bearings support scheduled pump maintenance.
- Audience: Commercial HVAC contractors, boiler technicians, facility engineers, heating-zone installers, and industrial maintenance teams can specify this model.

Applications & Use Cases

Use the Armstrong 410133-303 704T for multi-zone three-phase heating, small boiler loops, commercial hydronics, and compatible HVAC circulation. Physical dimensions, unit weight, and connection reach were not supplied, so verify pipe spacing, valve clearance, bearing access, motor wiring, lifting room, and structural support 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.
- Confirm voltage, phase rotation, purge air, lubricate the sleeve bearing, inspect seals, and verify coupling alignment during commissioning.

Clean strainers, inspect the flexible coupler, check bearing lubrication, and monitor the cast iron body for leakage during scheduled service. Purchase the Armstrong 410133-303 704T hydronic circulating pump from Mulmotor.com for authentic equipment, applicable factory warranty protection, and pump support.