Armstrong 410133-243 Circulating Pump 704S Bronze Impeller

Corrosive secondary loops use Armstrong 410133-243 704S for medium-head hydronic circulation with a bronze non-ferrous impeller. Its 1/6 HP, 115 V single-phase motor drives a modular three-piece assembly inside a cast iron body, while periodic oiling supports the sleeve-bearing design. Confirm water chemistry, motor rotation, flange alignment, and lubrication requirements before startup.

The Armstrong Series 700 704S uses bronze-fitted hydraulics and a modular three-piece shaft construction for compatible secondary loops. Its cast iron body provides the pump housing, while the sleeve bearing requires periodic oiling during service. Verified data does not include GPM, maximum head, amp draw, RPM, seal material, connection size, operating temperature, dimensions, weight, thermal protection, or self-priming capability, so match the pump to the approved system curve.

Key Features of Armstrong 410133-243 704S

- 1/6 HP motor supports medium-head hydronic circulation and secondary heating loops.
- 115 V single-phase operation suits compatible residential and commercial heating circuits.
- Cast iron body provides a rigid housing for fixed hydronic installation.
- Bronze non-ferrous impeller supports corrosion-conscious secondary-loop circulation requirements.
- Modular three-piece construction supports service access to the pump assembly.
- Sleeve bearing design requires periodic oiling according to approved maintenance instructions.
- Series 700 configuration suits medium-head hydronic systems and commercial heating loops.
- Flow, head, amperage, RPM, seal, connections, temperature, dimensions, weight, protection, and warranty require confirmation.

Why Choose Armstrong 410133-243 704S

This Armstrong bronze-fitted circulator combines a serviceable modular assembly with single-phase power for compatible hydronic loops.

- Build: Cast iron, bronze, and modular three-piece construction support secondary-loop service where water chemistry is compatible.
- Value: Bronze impeller construction can support corrosion-conscious applications, while proper oiling helps protect sleeve-bearing operation.
- Audience: Hydronic contractors, HVAC technicians, boiler installers, facility maintenance teams, and commercial heating specialists can specify this model.

Applications & Use Cases

Use the Armstrong 410133-243 704S for medium-head hydronic systems, corrosive secondary loops, commercial heating circuits, and compatible HVAC circulation. Physical dimensions, unit weight, and connection reach were not supplied, so verify pipe spacing, flange clearance, oiling access, motor wiring, valve placement, and service room 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 water chemistry, purge trapped air, inspect the seal, lubricate sleeve bearings, and verify 115 V operation during commissioning.

Clean system strainers, inspect the bronze impeller, check bearing lubrication, and monitor the cast iron body for leakage during scheduled service. Purchase the Armstrong 410133-243 704S bronze-fitted hydronic pump from Mulmotor.com for authentic equipment, applicable factory warranty protection, and pump support.