Armstrong 410133-241 Circulating Pump 702S Bronze Impeller

Open hydronic systems can evaluate the Armstrong 410133-241 Series 700 702S with 1/12 HP, 115 V single-phase operation, cast-iron body, bronze impeller, bronze shaft sleeve, and Buna-N mechanical seal.

The bronze-fitted arrangement is listed for non-potable open systems and high-oxygen hydronic loops, where the impeller and sleeve materials affect component selection. The supplied record does not provide exact flow, head, pressure, temperature, curve, or efficiency values for this circulator.

Construction Details

- The 1/12 HP motor establishes the listed power class for small hydronic systems.
- 115 V single-phase operation supports standard electrical compatibility checks.
- Cast-iron construction identifies the documented pump-body material.
- A bronze impeller provides the listed non-ferrous rotating component.
- The bronze shaft sleeve supplies a specific shaft-protection reference.
- Buna-N mechanical sealing requires fluid and temperature compatibility review.
- Open non-potable systems define the stated application boundary.

Hydraulic Performance and Application

The 702S is listed for open non-potable systems and high-oxygen hydronic loops. Exact flow, head, NPSH, pressure, temperature, curve, and efficiency data are not supplied, so the bronze-fitted construction does not establish hydraulic capacity. Final selection requires the actual system resistance and required circulation rate.

Installation Requirements

Confirm 115 V single-phase power, compatible flange dimensions, flow direction, rotation, bronze-sleeve fitment, Buna-N seal compatibility, fluid temperature, and service access before startup. The cast-iron body should remain within the documented non-potable hydronic application and should not be presented as a potable-water configuration.

Warranty and Maintenance

Armstrong provides a 30-Month Limited Warranty from date of manufacture for circulators, covering material and workmanship defects under normal use and service. Improper installation, maintenance, misuse, alteration, negligence, abnormal additives, and normal wear are excluded. Bronze sleeve and Buna-N seal condition should be checked during service. Mulmotor can assist with product details and order questions.