Armstrong 410135-200 Circulating Pump 707S

Large apartment loops use Armstrong 410135-200 707S for high-flow residential and commercial HVAC circulation. Its 1/2 HP, 115 V single-phase motor operates at 1725 RPM through a cast iron body with a heavy-duty flexible spring coupler. Confirm the sleeve-bearing oiling schedule, standard mechanical seal, system curve, and piping support before startup.

The Armstrong Series 700 707S uses a sleeve bearing requiring periodic oiling and a flexible spring coupler for motor torque transfer. Its 1725 RPM motor supports larger hydronic loops, while verified data does not include GPM, maximum head, amp draw, impeller material, connection size, operating temperature, dimensions, weight, thermal protection, or self-priming capability. Match the pump to the apartment-building heating demand before installation.

Key Features of Armstrong 410135-200 707S

- 1/2 HP motor supports high-flow residential and commercial HVAC circulation.
- 115 V single-phase operation suits compatible apartment-building heating circuits.
- 1725 RPM operation supports the specified Series 700 pump configuration.
- Cast iron body provides a rigid housing for large hydronic loops.
- Heavy-duty flexible spring coupler transfers torque during circulation operation.
- Sleeve bearing design requires periodic oiling according to approved instructions.
- Standard mechanical seal supports fluid containment under compatible conditions.
- Series 700 configuration suits apartment loops and large HVAC systems.
- Flow, head, amperage, impeller, connections, temperature, dimensions, weight, protection, and warranty require confirmation.

Why Choose Armstrong 410135-200 707S

This Armstrong high-flow circulator combines a larger motor rating with a serviceable coupler and sleeve-bearing design.

- Build: Cast iron construction, heavy-duty coupling, and sleeve-bearing service support compatible large hydronic loops.
- Value: High-flow capability can support apartment-building circulation, while scheduled oiling helps protect bearing operation.
- Audience: Apartment maintenance teams, commercial HVAC contractors, boiler technicians, hydronic installers, and facility engineers can specify this model.

Applications & Use Cases

Use the Armstrong 410135-200 707S for large apartment loops, high-flow residential HVAC, commercial heating, and compatible boiler circulation. Physical dimensions, unit weight, and connection reach were not supplied, so verify pipe spacing, valve clearance, oiling access, motor wiring, coupling room, and lifting requirements 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, purge trapped air, lubricate the sleeve bearing, inspect the seal, and verify coupling alignment during commissioning.

Clean strainers, monitor the cast iron body for leakage, and inspect the coupling and bearing housing during scheduled maintenance. Purchase the Armstrong 410135-200 707S high-flow HVAC circulator from Mulmotor.com for authentic equipment, applicable factory warranty protection, and pump support.