Primary HVAC systems use Bell & Gossett Series 80 Model 4 x 4 x 9-1/2 for industrial circulation and building hydronic loops. This 5 HP in-line pump operates at 1750 RPM through a four-pole motor, while the 4-inch suction and discharge connections support large commercial piping. Its significantly trimmed 9.5-inch impeller is selected for the 5 HP curve, so confirm system duty before startup.

The Series 80 uses an in-line mounted configuration with a 4 x 4 connection arrangement and nominal 9.5-inch impeller. Precision trimming adapts the hydraulic assembly to the specified 5 HP operating curve, but verified data does not include voltage, phase, amp draw, GPM, maximum head, seal type, operating temperature, dimensions, weight, thermal protection, or self-priming capability. Support the piping independently, purge trapped air, and verify pump rotation before commissioning.

Key Features of Bell & Gossett Series 80 Model 4 x 4 x 9-1/2

- 5 HP motor supports primary and secondary HVAC circulation in industrial building systems.
- 1750 RPM four-pole operation suits compatible large-loop hydronic circulation applications.
- 4-inch suction and discharge connections accommodate large commercial HVAC piping headers.
- Nominal 9.5-inch impeller supports the specified Series 80 hydraulic configuration.
- Significantly trimmed impeller aligns hydraulic output with the selected 5 HP curve.
- In-line mounted design supports direct installation within compatible mechanical-room layouts.
- Industrial circulation profile suits primary HVAC, secondary HVAC, and process-water systems.
- Voltage, phase, amperage, flow, head, seal, temperature, dimensions, weight, protection, and warranty require confirmation.

Why Choose Bell & Gossett Series 80 Model 4 x 4 x 9-1/2

This Bell & Gossett large-pipe HVAC pump combines a trimmed impeller with in-line installation for building circulation.

- Build: Large connections, in-line mounting, and curve-specific impeller trimming support compatible commercial HVAC service.
- Value: Hydraulic trimming can reduce operating mismatch, throttling, motor loading, and unnecessary service interruptions.
- Audience: Commercial HVAC contractors, industrial pump installers, building engineers, facility managers, and hydronic designers can specify this model.

Applications & Use Cases

Use the Bell & Gossett Series 80 Model 4 x 4 x 9-1/2 for primary HVAC, secondary circulation, industrial water movement, and large hydronic headers. Physical dimensions, unit weight, and port reach were not supplied, so verify 4-inch piping alignment, valve clearance, motor access, lifting room, and structural support before installation.

Warranty & Support

- Warranty: Bell & Gossett general product terms provide one year from installation or 18 months from product date code, whichever occurs first.
- Verify the pump curve, purge trapped air, confirm motor rotation, inspect seals, and check piping alignment during commissioning.

Flush debris from the suction line, monitor the in-line casing for leakage, and inspect impeller condition during scheduled HVAC service. Purchase the Bell & Gossett Series 80 Model 4 x 4 x 9-1/2 HVAC pump from Mulmotor.com for authentic equipment, applicable factory warranty protection, and pump support.